In terms of how you made the positioning of Jill, you did a pretty good job.     I felt that you could benefit from adding a couple more colors to make it seem less stiff (If that's the right word... describing colors is tough). The colors didn't seem to be combining well, it seems better when they flow into each other. Anyway, I did an edit for the sprite and the start of a walking animation. As to how, are you asking how to make them in an image editor or what is the best way? I made both of these in Gimp. It was a bit hard to make the animation because the legs were so linear, but I felt I did an okay job.