I think you did well with the colors, They look very subdued and old-timey! Love the poses too, very readable and full of action and movement! I like how you did the perspective with one foot being smaller than the other, too. Is the angle from the pic slightly from below? It feels like it with where the ground is, how it looks, etc., and my screen is very short, so when i see the his-pants-to-the-ground part, it looks like im looking up, though the rest seems from a straight on angle. I think for that angle maybe both the feet could be a bit bigger, to imply a lower angle like that, or at least, with the way the ground is going "backwards", maybe the closer bugger foot could be a little more exaggeratedly bigger than the one in the back.
hopefully that all made sense. This is good!

haha, This is a bit much but thanks a lot for getting the point XD. The angle is a lower veiw but it's allowed just motion distortion. I'm still not great at Realistic proportions and perspective, so I fake it a bit.

wah sorry, I tend to never be able to explain what I want in a short way pfft. XD;
But I see what you mean! It's just a minor thing though, for a silly pic it doesnt really matter haha

Ah it's a good habit to have. Very helpful. Thanks so much.