Sparkatale

Hey all, For my book The Orphan's Code, I wanted to have the cover be a picture of the main character from a specific scene in the book where she's standing on a rooftop with a bow. I know exactly what she's wearing and what I want it to look like, and I have some reference pictures to help, but I can't draw and I'm not too good with Photoshop. Can anyone help me with it? It would be nice if it could look like a real picture, but a good illustration should do fine. Thanks!