Here is how to format your pictures. In short place them all in the same div tag. You can put as many as you want in the same tag.
[[div style="float:right; margin:0 2em 1em 2em; width:300px; border:0;"]]
|||| [[image image1.jpg width="300px"]] ||
||||~ ^^text1^^ ||
|||| [[image image2.jpg width="300px"]] || ||||~ text2 ||
Looks like you have a good start, but I think you will run into the same problem I'm hitting on my current article. Although an extradimensional entity that kills you is creepy, it really needs to have a motivation besides carnage. Although you can leave this motivation in mystery, you need to drop some hints that there is some benefit it gets from its actions.
Another thing I think SCP-XXXX would be the orb, with -1 being the entity.
I would also drop a hint or two of a possible origin of this orb. Its too random for my liking as is.
The audio transcript isn't too bad in my opinion, but it tells us nothing more about this scp. You should use this to drop some more information, we already know he comes up and kills you, give us some details on how or what it looks like.