I did this las one as a homage to the real Supergirl issues covers. And I was inspired specially for this one by this cover: images4.wikia.nocookie.net/__c... I used a page from the comics as the background, and added the logos and all the've got on a normal issue cover .
Costume is mine, i did it myself. Model is me, montage is from my hands too. But I don't own supergirl and the others designs on this graphic composition