Body one with head one is the best option so far although for me it seems like your real struggle is the pose, the bending knees look really odd as well as the trunk area. My advice would be to try to enact the character's pose and see how your body behaves.
The leg closest to us seems broken due the pose and the angle of the foot, the leg far from us is too thin giving the impression of being disconnected from the butt, the trunk of the body is totally upright which is really uncomfortable on this kind of position, if you lean it forward it will balance the pose better. Lastly the arms could be on a more dynamic position.
You should also pay attention to how light behaves, even if the light comes directly from our right, the leg closest to the viewer should be lighter since is the one reflecting more light to us. Also try to work with a neutral gray instead of a saturated orange as a background, you will see have a better sense of the character that way.
This kind of poses are really hard to do, so, if you feel something's wrong it's probably a major thing instead of some small tweak.
Last thing to say is this char is an improvement over your last one so keep the good work, I really like the face and head area overall! Here's a quick and dirty edit to show what I just said.