In the kneeling position, the character should not lean forward as much. The center of mass is too far forward and it looks unnatural. His left knee should be the support for the supporting hand. It will look better if elbow is above the knee. The pelvis should be more vertical, and the leaning should be due to the bending of the back. If your intention in tilting the pelvis was to lower that position, then the character could sit on his heel instead.