i extensively used a tool i have created on this one. the tools a hybrid between a knife and a brush. i didnt really create it i just had a few laying around and put them to use. its a brush that has been totally scrubbed down till there is only a stub left. i broke the handle off short and use the tool to knife on thin lines, draw in small shapes, lay in really small shapes thats not convenient because the knife blade's too long. so now i'm using knives, fingers, and a stub thing to get the image down. you do what you gotta do right?