My recommendation, Zombie, would be to practice drawing figures with a little more depth to them. Your drawings are very 2D.
Almost every character you draw is either facing forward with their limbs flat at their sides, or facing sideways with their limbs in front. Whatever it is, the key word is 'flat'. There is no attempt at trying to add depth to the figure with perspective and foreshortening and the like as you would see in an actual person or animal (since real things are 3D).
So trying that out, I think, is the best course of action.