Wow ahhh! Okay thanks, y'all!! (≧◡≦)
(And I will certainly make you a sprite in return Miss Aimee!!)
ALRIGHT LET'S DO THIS.
So their names are Kasumi Asahina and Kyouko Asahina. They are twins, so really only one ref is needed.
Their anime style face claim is
Ikusaba Mukuro and their more realistic face claim is
Mellisa Clarke (whom I would not suggest looking up for more refs if you don't want to look through pages of naked women because she's a SuicideGirl).
Um so Kasumi's magical girl name is Blackspade (Burakkusupēdo in romanji) and her element is Nothingness and her outfit looks like this (except she has a black spade charm in the middle of her neck bow):
And Kyouko's magical girl name is Redheart (Akaihāto in romanji) and her element is Everythingness and her outfit looks like this (minus the hearts on her shoes I decided to scrap that):