>>7672988
That's nicely done. One small criticism: the torso doesn't move up and down. This is necessary for both feet to leave the ground in a run, and it also drives the vertical oscillation of the breasts. So it looks a little bit off.

pic related is from Animator's Survival Kit by Richard Williams
can be found here:
https://e-hentai.org/g/1692566/52e689567b/?p=3