I have been digging in the topics to find some clue about customizing icons for brushes.I just found one that Paul wrote long time ago,tried to but did not get it...

Is there anybody willing to explain it for clumsies? Thank you very much!!I have the 9 pro version.
I am assiduouss checking the forum!! thank you to all that share your experiences, is really usefull and nice as I am the only one in my social and work environment that works with tvpaint.