Yeah I prefer just links since I don't like gigantic posts.

I will update the rules and such soon. I've been meaning to change things on the front page but I've been busy and tired and just plain forgetful lately.
Proportion-wise I think they're ok. I don't know about the unusual base, though. Especially with the water one, but in terms of changes, I think they're fine. Only problem is your margins. There should be adequate space left around all four sides of the image and I think you've gone too close to the edges in stage 3, 4,and 5 for both.
For the air one - the right and bottom edge (mostly stage 4 & 5) &
For the water - all four edges, definitely in the final one.
Edit - Ugh, so slow because I'm distracted. Sorry.

Forgot to say that they're really cool anyhow! You've improved so much, it's really cool to see. :)