Firstly, I edited your colored leg. Gave him muscles on the thigh, and made the knee and shin more realistic.
Then, I used a red to outline the three major forms, pelvis, rib cage, and cranium as simple boxes. Keeping them balanced with make your figure more well planted. Since he shifted his weight to his right leg, all of his body would shift with it to keep balanced. Then I re did the arms and leg to match up with the rest. From there I realized a fundamental problem of leg length- or lackthereof. Your colored leg should be longer to match his body.
