I used a small round brush - it was like coming home! I could maneuver the paint around without picking it up again and without leaving a chopped edge. I've been using brights and flat brushes and I am forced to reckon with a flat chop brush mark, which sometimes I like, but sometimes not. I have to figure the brush thing out, because I want to be able to use them all and you can't do everything with a small round brush. Also, I used a smooth wooden panel instead of a canvas panel, so the paint stayed up on the surface and could be pushed around and built up, really delicious.