i've looked through art guidelines like 3 times and haven't found anything against this picture
i mean... i understand it's made in photoshop, but i guess it's like a collage (quote from the guidelines: You may submit collages with photographic elements, providing they constitute a new work of art)
maybe i'm stupid, can someone explain that so i know what not to do?
Copperama
I agree, this should be accepted, try @-ing newgrounds on twitter, they're pretty quick to respond there. At the very least you could get an answer.