SCP Foundation

Okay, firstly, we do already have a D-Class who became an SCP object, SCP-181, which is handled - currently - better than this draft article, even though it was from Series I. Obviously, this is a draft, and drafts can be improved. Currently, your character is a bit overpowered/an X-Man/Marty-Stu.

So, on to the draft at hand.

SCP-4528 Must be locked in a 10m x 10m x 3m containment cell made entirely of Steel plated Concrete walls and celling located in Site-██,the floor must be cleaned every week by any personnel,except Class-D,level 4 and beyond.

'SCP-4528 must be locked in a 10m x 10m x 3m containment cell, made entirely of steel-plated concrete walls and ceiling.' [Where you've placed the Site is an awkward fit and should be mentioned elsewhere in this intro or not at all, and the cleaning procedures really don't need to be mentioned].

Your article is full of SPAG issues. I'll try and point out as many of them as possible, but you may want to sit down with a friend, parent, or teacher, and ask them to help you go through it from top to bottom to highlight the rest of the mistakes.

SCP-4528 should always be cuffed with a special pair of eletronic bulk Handcuffs attached to the celling and locked with a eletronic keypad with a code that must be changed every week and a copy must be written on a paper and be kept safe in possession of a Level 4 or higher personnel's office.

'Electronic' and 'ceiling'.

This is a run-on sentence that needs to be split into at least two sentences and be given at least one comma.

Additionally, the handcuff issue - a quick look online search shows no handcuffs that have an electronic pad and, whilst I'm sure The Foundation has some technology a little more advanced than what's out there, I don't know how much they'd use it, especially in a case like this.

Also, you need to be more clear in your descriptions - at the moment, it sounds like your scip must be 9ms tall, or else be dangling from the ceiling, whereas I think you probably mean the handcuffs are attached to some sort of chain, either static or attached to a track. You need to clarify this.

Doctor's notes can be hit or miss, and the doctor's note here is a miss. I don't think how your scip is being treated is 'harsh', and neither would staff, who see humanoids treated much worse on a daily basis, assuming they work within the Humanoid Containment of that Site.

SCP-4528 cell must be checked every day

This should go without saying - most humanoid or other dynamic scips would be checked every day for both safety and health reasons.

Subject has rarely requested items,but oftens request:(Joking with the Foundation)

'Often', not oftens.

As for this bit itself, it just doesn't work. The idea of it 'joking' with The Foundation means these requests wouldn't need to be listed, because they don't make a difference to its life. It's like trying to add lolfoundation but it's several years after this was commonly used. Most of them are just nonsensical and, again, shouldn't be mentioned - the rest are a chance to add further Addenda. The only 'granted' one is silly, not funny.

The O5 members should not be questioned about the Approval of SCP-4528's request to be naked and then Denying his request to get his clothes back,as he was only Joking (Again) and should not think we are his servants or that the Foundation turned into a Hotel just because he knows what he knows.

There are a lot of SPAG issues here, such as random capitals ('approval', 'denying', etc.) as well as the fact again it's a run on sentence. Additionally, you and Foundation staff should always refer to your humanoid as either 'it' or 'they' - this guide here is essential reading if you want to create a humanoid scip.

Is to be kept in mind that SCP-4528's requests doesn't need to be heard neither be attended

And that's why they shouldn't be recorded, either.

In case of massive containment breach from SCP-████,████,████,████,███ and 035

You don't need to say all that, just say 'In case of a containment breach'. No need to mention any numbers, nor hide any numbers.

SCP-4528's cell must be the first to be confirmed of breach

This sentence doesn't make sense. What does 'be the first to be confirmed of breach'?

as it could put in danger the success of containment all escaping objects — or manage to escape alone.

Again, the rest of this sentence doesn't fully make sense, either. I think I can guess what you're trying to say, but it shouldn't be a guessing game - I should just be able to read what you mean.

If it stills lies on his containment cell,Site-██ lockdown must be immediately called to escort SCP-4528 to Safety.

'If it still lies on his containment cell' doesn't make sense. Just because it's crossed out, it doesn't mean it can't make sense.

SCP-4528 is a male young white human of american descent,that weights approximately 76Kg (167 lb.),is 24 years old and it measures 1,89 meters in height (6.2 ft.).SCP-4528 has dark brown hair with a fringe that covers the entire left side of it's face,has honey eyes and a small tatoo on his back that resembles two crossed daggers and a sign that reads "I Killed JFK before i was Born".

Okay, here, you go into way too much detail about how your scip looks. It's not a dating profile or a fanfiction.

Instead, try this - 'SCP-4528 is a 24 year old, Caucasian male of American descent. It is approximately 1.89 metres in height. SCP-4528 has dark brown hair and is otherwise unremarkable'.

We don't need to know where its every freckle is, or what its tattoos are, or how its hair style is - just the very basics. It's enough information so if it were to escape, it has a good chance of being spotted, but not so much information that the reader knows unneeded information.

SCP-4528 is an Ex-Class-D Personnel from the Facility,SCP-4528 has been brought to attention by the foundation for two anomalous abilities and an important fact:He knows every word the foundation will and has ever wrote,said,expunged and hid.

You don't need to mention any of this at all right now. Wait until the description of anomalies part that is literally just coming up.

And then, honestly, at this point, after reading the 'superhuman' things your scip could do, the unneeded Addenda that make up over half the draft alongside random mentioning/crosslinking of other SCP objects, I was looking at this and thinking that you need to build this article from the ground up. No matter if I were to literally give you feedback line-by-line, I don't think it could be 'saved' in its current state.

You need to take your core concept back to the Ideas and Brainstorming Forum, read more Series III and Series 4 articles, and read more guides, such as How to Write an SCP guide.

I feel like there's a lot in this draft that needs to be gotten rid of, redone, and shortened, by a good deal. It's very rare that I can't get through a whole draft but, in this case, I was struggling too much with the core concept (basically, an overpowered SCP object who happened to have once been a D-Class) and with the finer details, such as Addenda and Interviews. The SPAG issues were frequent, but I could have dealt with them if your idea had been stronger and the outcome not quite so ramble-y. As I've highlighted from the first few paragraphs, you can delete a lot of this extra information, and you wouldn't lose anything. Make a board in the Ideas Forum, but don't post your draft - just post your idea about this scip and what it can do, and see if people can help you improve on it, or at least what their initial reaction is to the idea.