Nice work! Form follows Function - if a handle fits your hand and has a deep enough socket to hold a knot, it's good. Embellishments, curves, hand detailing after turning can add distinction and difference to your style. I've developed my preference as a brush user - Professional Barber Style; flat bottom, deep recess for increasing backbone of the knot. fairly tall and thick for my big hands. Others are Beehive fans, or prefer Grecian Urn lovers. You are in the enviable position of being able to experiment!