Photo Editing-replace background

I have 37 photos that I would like edited so the lighting is the same on all pics and changing the greenscreen background to a neutral color on all the photos or if you are creative and artistic I would like to see what you can do. I would like to see maybe some cityscapes in the background as well to see if it works. I would like the work to be clear and clean as possible. Please send me links to sample work so I can see how good and artistic you are. The photos are for a tshirt line that im starting.