Looks pretty great!
A handy method my boyfriend used to keep his Gambit headpiece attached was fashion tape. It's supposed to hold up dress straps and the like, and is sold in lots of convenience stores and makeup-type stores. It held pretty well. Only had to be changed once during the day, and the small strips were very easy to keep in a jacket pocket as backup.
Hepzibah (with the Corsair), Scarlet Witch (with Quicksilver), Dagger (with Cloak, 2013 Ultimate editions), Mythic Cassiopeia
Chosen, In Planning:
Carmelita Fox (with Sly Cooper), Riza Hawkeye (with Roy Mustang), Red (with Subject Unknown)
Ravager, Emma Frost (with Namor, Phoenix Five editions)