Voted! 

Aah, the shadow! It's all good on the white background! =)

 Such a shitty background for something beautiful.

If the yellow blob is the sun, your shadow is facing the wrong way. 

Personally, I really like the outline. It adds to the overall style of the piece.  The only thing I don't really like is the far right side of the piece... I feel like it needs something.  Maybe a couple other statues in the distance, or hell just cut it off :)

Good job with the statue,  the outline is fine to me, I just don't like the bottom part of the outline, then it seems like someone just stuck it there a few minutes ago.

 There doesn't need to be a background....Just no transparancy. 

Looks great ;)

nice - the moai. only =) you're right that the background doesn't fit. is it supposed to be some desert?

just checked the challenge page for the assumed 'background-rule'.. cannot find it. where did you hear that?

edit/hint: i'd remove the outline that is separating his head from his body. also there's a stray pixel under his chin.. oh, thinking about proper backgrounds: what about quickly pixeling a  storage room? ;D

Except for the yellow blob, this is way better with than without background!

Nice stuff skedd!

it would be so much better without the outline, it is very unrealistic now. But i really like the statue itself.

I like it, the maoi looks really cool and the background, while simple, looks alright.  Two problems though, the black outline around the maoi, which I think you could maybe keep, but put some sort of AA around it so its smoother.  And also what is the round thing coming out of the sand?