I'd work a bit more on the carp's face and make it just a tad more plump. Id also twist the 'mohawk' on the dragon right after that curl a bit. Might make it a bit more 3d. Then again, I'm not sure how the tail 'flame'? is worked out. Seems a bit like a border, have you tried making it come from the center of the tail tip? Other than that, great work.
ps, I can be a bit ocd about art, lol. Only reason I don't have a tattoo yet is because I keep changing and making things more fine and even. Also can't find an artist that can keep with what I want and not make it asymmetrical. v.v
Sorry if my critique is not to your liking, I personally can't stand any criticism, even positive, lol.
Either way, I think they will make you an apprentice! Good luck!!