In this shot, George suggested that I redistribute the timing of each action, so the overall animation follows a slow-in, fast-out, slow-in principle.
Currently, my timing is more like slow-slow-fast-slow. Before the character stretches her leg toward the body, I added a preparation pose to build up energy, but George suggested removing it because it feels a bit awkward.

He also recommended speeding up the actions after the character lands and as she stands up, as well as making the following step forward quicker.
So I made some adjustments, but I noticed there are still some issues. For example, when the character is preparing to jump, I had her hold the pose completely still for three frames, but this made the movement feel a bit stiff. If I try to add a slight movement during those three frames, it ends up looking twitchy because the hold is so short.