Computer Animation Arts

I was looking around for some inspiration and I came across this guys blog Chris Wahl he has loads of free Photoshop brushes to download, some of them look pretty good. http://chriswahlartbrushes.blogspot.fr/

Go here for a quick tutorial on building custom organic brushes in Photoshop - courtesy of Flooby Nooby .

When I'm drawing with Wacom tablet sometimes pen just doesn't stop making a brush even though I'm not touching the tablet anymore with the nib. It is very frustrating. Anybody have any ideas what could cause this problem?