A lot of my friends have had the same issues. If you really want to wear short sleeved shirts, you could get fingerless gloves, wrist warmers, or wear rubber bracelets. Rubber bracelets are my personal favorites because I get to represent my favorite bands!:)

Plenty of people were lots of bracelets, even if they aren't covering up scars. It is so great that you are recovering and having the strength to wear short sleeved shirts :)