i tried...but it doesnt works, i need to study more about pixel art. i dont will be on the challenge because i dont have any chances...but i wonna know your opnion about my pixel art.
i wonna know the bad things and the good things, how i can do this better, i wonna know.bye | 
The background looks good (especially the water).
As for the foreground, the wizard's head is very oddly shaped and he seems to have no neck which is quite distracting for me. Also, the orb, if it is supposed to be glowing, should have a slight aura around it (and no black line). Other than that, I think it is very nice :)