Wall-E in process

This is amazing artwork!! I love all the effects and details.
I just have a few things, don't worry. I know I'm not a very good artist, but here I go.
The treads don't look very real to me. This is just my opinion.
And, I'm not so sure you can do this, but I think it would be more helpful if you could do a animation of how to draw this. The ground he is standing on looks a bit like water. He also needs a bit more rust. But, I think this is magnificent artwork. Amazing job. Favorited.