Ipad + Nomad brush

Recently I've been doing a lot of drawing using my Ipad and a nomad brush (big thanks to the Stanleys for getting me the brush for christmas!) after a lot of practice I think I've mastered using the brush. Unlike a drawing on paper the thickness of the line is determined by how fast it is drawn instead of how hard you press down which really suits my style.

Here's a picture of the actor Danny Trejo I drew the other day on Sketchbook for Ipad;