texture brushes have always been a bit of a hassle to make, and I am really digging your brush UI over PS's. Something that would be really cool and handy as an artist making brushes on the fly would be to allow me to, instead of making and saving a file for the brush head, just let me draw it in the box you have under base texture and take it from there. Even better, let me go back and edit that brush head later as is needed. This would be absolutely amazing for work flow, and it's something I haven't seen yet. I'm a couple days into the trial and loving this software, please keep it up!