This is more than a loop though, actually the full walk frame by frame. :) Looks a little robotic indeed, but I don't think it's the framerate so much as the drawing, it jitters a bit much, and thus makes the walk seem odd even when certain parts are perfectly paced, like for example the arms look just right all the way through, but the legs drag a little, and you could use a bit more aligning with torso/head.

Is it possible to use paper the same way you would use the onion skin feature digitally, so you can see previous frames and vaguely trace them when making new ones? Seems that might be the way to perfect this.

Keep it up! Practice makes __!

-cd-