so if you want to win , put more effort on your drawings , take your time to draw them and coloring theme , search tutorials , practice all days , you need to practice the hair , body shape and arms , if you pracitce youll be better! Good Luck on the contest!
You need to work on your anatomy. I suggest looking up some tutorials on here as I have found some good ones on DA. I would also suggest some shading tutorials. Other than that, practice. That is the most important thing. Good luck.