First of all, the submitted file was a ROM. You are not allowed to submit ROMs in the site because they are illegal, make an IPS patch instead, watch this video
for more info.
Also, the hack itself was really poor, it had flat, empty and short level design, glitched sprite graphics, cutoffs and floating/stacked munchers everywhere. Read the hack submission guidelines
before you submit another hack; also, I advise you to play some accepted hacks in the site so you can get an idea of what we expect from you to submit.