The 4th frame doesn't seem to flow with the rest of them. Looking at how the foot moves, it doesn't really make sense. I also think he's bobbing a lot, his body should bob upwards once during a step, instead of twice which is what it looks like right now.
Looking at your first attempt, one thing I need to point out is to keep the leg lengths fixed, one of the problems with the original is that the thigh seems to change length during the animation.
Tried editing the frames, although his legs look like jelly when animated.
EDIT: oh ok two new posts
Looking at your first attempt, one thing I need to point out is to keep the leg lengths fixed, one of the problems with the original is that the thigh seems to change length during the animation.
Tried editing the frames, although his legs look like jelly when animated.
EDIT: oh ok two new posts