Its true he run

The legs blend together and you copied the back pose for the left leg and right leg, but you need to put them in perspective to the 3/4th view because they look so similar they match and it kills the sense of motion. Adding a moving floor of some sort would hide this a little, but the fundamental issue would still be present. Also add more breakdowns, this is a slightly complex design, but it's honestly good for animating. The head bobbing is cute and works, but the static chest kills the illusion.

The real advice is to read through the animator survival kit, because that book is essentially "How to do walk/run/skip cycles the book" and will clear up a any issue that animating walkcycles may present.

Don't let this discourage you from doing a run cycle as It's a fun design, and I enjoy seeing you post him to the art portal every time you respond to someone in the art thread.