I have learned the hard way. I was feeling a little over enthusiastic about the Gilbert lick and felt like I was tearing it up. I was actually tearing up my thumb! The mark you see there now is about 5 days old. I should have taken a picture when it was gnarly.
Because of the blister I had, I could NOT rest my thumb on the strings like many UWPSers. My downward technique improved immensely because the pain I felt otherwise was ridiculous. My two note per string phrases have started to come along!
Just had to share my unlikely progress story.
