I'm using the max size within the hand sprite sheet, going diagonal within the window. Shrinking down the hand size would make for some strange fits during other moves. I have a JJ-specific strut that doesn't use the same hand angles up as well.

So glad you made JJ specific guitar hands! The other set works great for Honky Tonk or New Jack, but prevents you from doing the Jarrett Strut. Have you considered shrinking the hands so the guitar isn't ukulele sized lol?