Cool,
That sticker sheet looks like it might just do the trick. How big is the largest sticker?

And I guess I'm still left wondering, do these stickers kill underlying details? If I were to put the sticker over a mesh grating will it be CLEARLY visible that it's a sticker? or will it blend alright?

Anyone know of other ways to apply the cobra sigil that I haven't thought of? Is there a good template? or trick to making them by hand?