Ayne ~ you should probsabaly PM a mod about it, as I think it should have gone through by now, but they could have a better answer for you.
As for the costume icons, thanks for asking - no, character artwork isn't allowed as icons, even for in-progress costumes, although unfortunately, a lot of people do that anyway, and they have to be deleated. You do have a couple of options though - you can leave it blank, or once constuction has begun, I use a photo of the costume in-progress - lying on the cutting table, etc.