I would probably try one of the layereffects.. but I'm not sure I understand what you mean by it being white.. have a screenshot?

I think and Overall is a very good idea.. but that's just me :)

I don't like the horns(?) but other than that it's great! a cousin to my tattoo? ;p

it's actually a great idea.. it's very seldom that you get feedback in the galleries that basically says something other than "I like it" or "I don't like it".. very few give the resons why they like it or dislike it, and what they think needs inmprovemt.. if this could be done in the galleries that would be great.. but as someone said.. I think it's gonna be hard to get everybody to do this in the galleries some might feel uncomfortable giving "negative" feedback.. they might not understand how the negative feedback actually helps the artist.. and they might be afraid of the artist giving counterfeedback back onto themselves just for "getting even".. (and some probably will..which is sad) This would be a great place for just that.. giving feedback on how to improve the image..giving the artist another persons view on things.. a bit more in depth..

Thanx for the honor guys =) I'm with desy.. finding edges sounds like a lot of fun =)

Pure Photoshop by the way =)