Ok, so I'm doing a costume for a Team Plasma Grunt from Pokemon.
Problem is, we can't figure out a decent way to do the sleeves. Like, in such a way that they stay rigidly open. I realize gravity plays a role in this so I can't get it exactly right, but yeah.
Currently, we have interfacing in the sleeves, however, that's not proving easy for arm movements in certain ways and is creasing easily. So is there a good alternative method?