If you haven't already , check out Gene's tutorial on wood carving in the tutorial section of the home page. Really helped me. Also helps if you have a good carving knife. Making the rough cuts with a saw first really makes the process go much faster as Gene demonstrates. I can not emphasize enough the value of his tutorial.
Once carved the most important thing is............everything. Straight, square, center, position see what I mean . Take your time and mark it check it and check it again.