Yeah the S on the shirt makes me crazy too. But beside this its OK

Hip should be more in the center, that's the key to keep handstand/walk in balance, I know from experience. Just saying incase you feel like drawing something similiar in the future.

 That right there is a pixel that was apparently un-transparentized, and I did not notice it until you pointed it out. I have no idea why that appeared.

Hehe, nice animation, but what is that discoing pixel doing in the top right corner?

Thanks for the tips. The S was kind of a late addition since I thought the shirt was a little too plain before I added it. I probably could have made it smoother. The shirt I was trying to just have hang a little, and have it look like he had just tucked the front in before doing the walk. I'll admit it is a little awkward, especially since the front doesn't looked tucked in during some frames.

The face and hands were half on purpose and half laziness. Thanks a lot for the leg compliment, I spent a while on those trying to make them look good.

 The S on the shirt bothers me. It doesn't seem to be in perspective, and it jumps oddly. I'd just remove it completely. Also the hand closest to us seems to jerk too much right before the final frame of moving backwards. I think you need another frame there. At the same time there seems to be some odd movement of the waist. I would have the shirt either fully tucked in or folded down more, because right now it appears to be defying gravity. The head should probably turn from side to side a little, in addition to its current (nicely done) bobbing. 
The legs and feet are extraordinarily smooth, good job!   

As things to think about, but are probably intentionally done, giving him a face and defined hands would be nice.

All in all, you've done really well, but it could still use some work. Good luck~