I had no idea you liked The Silmarillion. If you were to paint more Silm elves, well... not that I'm not already in love, but. That would be it for me.
If you think about it, Curufin is actually one of the more tragic brothers, because he never made anything of himself despite having what I assume is great talent inherited from Feanor. What did he ever do that people remembered? At least Celebrimbor has the Rings on his resume. Not that I'd be too proud of that accomplishment, but er.
My favorites are Maglor and Maedhros - two others who are always mentioned together, and who seemed to be great friends.
I've always been interested in their relationship with Elrond, as well. Even started to write a fanfic about it, but that never went anywhere. :/ Someday I'll finish it... maybe.