Equinox

Not bad at all! It's quite detailled and it anatomically correct.

Yet I think your picture could stand out a bit more if the shading was clearer. Indeed, it's hard to tell where the light is coming from, resulting in a overall flat equinox. It's the biggest issue I can point out.
Be also careful in using pure black or pure white, it may add contrast, but it should be avoided as those values aren't always seen in a scene like this. It makes it all less "real". Learning a bit about colour theory may help you figure out what I mean.
Otherwise, the background needs to be polished a little more, you can add effects or particles that are less blurred (and thus more close to equinox, or even in front of him).
I would also recommand that you move up a bit your alias, it seems to be cropped out otherwise. ^^
(Btw, what kind of software do you use to paint?)

I hope this helps, and good luck with this contest!