The animation may seem unsmooth because you don't have any stable points. In something like this, I would recommend that one of the feet stays in the exact same place. You have him arbitrarily shifting every so often. Here's a visual example of what I mean.
->![[Image: 16m1vur.gif]](http://i22.photobucket.com/albums/b330/maxdxam/16m1vur.gif)
All I had to do was shift your entire first frame 1 pixel left. This makes his left leg consistent and stable through the whole animation.
He looks a tad jerky when he moves his body, and your gray for the skin is probably WAY too close to white. Otherwise, nice job, I like it.
![[Image: 16m1vur.gif]](http://i47.tinypic.com/16m1vur.gif)
![[Image: 16m1vur.gif]](http://i22.photobucket.com/albums/b330/maxdxam/16m1vur.gif)
All I had to do was shift your entire first frame 1 pixel left. This makes his left leg consistent and stable through the whole animation.
He looks a tad jerky when he moves his body, and your gray for the skin is probably WAY too close to white. Otherwise, nice job, I like it.