MY TIP: If you feel your picture is not balanced, put it up to the mirror. Also take your reference pic and put it in the mirror too. That will help to expose what facial features are off. To measure out where the features go, take an envelope, piece of paper or a ruler (straight edge)... anything to vertically represent your line placement. Take your reference pic, put the straight edge against the edge of the smile line and see where it lands near the eye. Then do the same on your drawing, if it doesn't land in the same place, adjust.