Once you've mastered our tube top pattern there are a variety of hacks to make it even more awesome! I'll be adding them here as I make them.
Elastic Flutter Sleeve Hack
First cut two sleeves twice as wide as the original pattern piece. I chose the tight short sleeve, and just placed the pattern on the fold. Then cut two pieces of elastic the same width as the original pattern piece.
Hem the bottom of the sleeve using a 1/2 in hem.
Hem the top of the sleeve and leave a one inch gap to feed the elastic through. Using a safety pin feed the elastic through and then sew the ends together. Finish the gap by hemming the rest of it.
Attach the sleeves like you normally would and voila!