If your goal (Im a little unclear on if this is what you are asking) is to make it appear more like the view is from slightly ontop, you want to enlarge the head, and shrink the legs to reflect the vanishing point being lower, right now its directly behind the character, making the view basically dead on. Thats actually fine, as it is the standard view for an rpg. If you are going a true 3/4ths view, as in, the character is facing down left or down right, you want the side closest to the viewpoint to be slightly larger then the side further away, making the leading foot lower and the head slightly larger from that side, and you are also going to want to show both sides of the face, although, with the side further away being smaller. Look at sprites from tactics ogre for a good reference on this view. I dont think thats actually what you are going for though...