I would still say, as nice as it might be to have the ability for a costume to do 2 things, there's a lot of little and medium differences that would make me say no...
but we are all free to our own creative juices, so i say if you wanna try and challenge yourself definitely try it, but for the sanity of your mind I would have to personally say, just make 2
Anime USA 2015...Halloween!
Steven Universe- Rose Quartz Gown version
Evangelion- Asuka Langley Soryu Yellow Sunddress
Magic Night Raye Earth- Ferio Yellow Shirt Version
Yuri Kuma Arashi- Kureha Bear Form
Yuri Kuma Arashi- Kureha OR Lulu School Outfit
Artist's Alley Hopeful....We'll See
Awesome Con 2016
Deadpool/X-men Comics- Siryn...not sure which version yet...
DC Comics- Raven Either Teen Titans or Original Comics version....