Looking for a front cover for an ebook.

I'm looking for someone to help create the front cover for a novel. I have attached an image for reference. It's an image of Glasgow which is where the book is set. If someone is able to utilise this image then great but not essential. The author wants an image of rooftops. The title of the book is Ren & the author is also detailed on the attached. A few examples to take to the author would be great.