its a good start, but maybe you can do something a bit more interesting than the black bits? i mean, its mario ffs, who associates him with black :/
also, what riddle said about that white. how did you miss that? lol

the text is ok, but it doesnt quite kick me in the balls and say "Mario!". maybe you could look for a tut, or try to replicate the mario writing, but obviously say pepper instead?