Sorry for the late response!
Here’s a quick run through of what I did. There may be an easier way, but this seemed to worked pretty quickly.
1- flip image

2- Fix perspective using bezier warp

3- Paint out whatever surface you may need to keep on the top layer.
In my example the image had a surface so I just kept some of it.. Not sure what you have there or what your plan is on that but this is what I did.

I didn’t do any touching up of the image itself as you can see, but it sounds like you have the source files all set so it didn’t seem necessary. If Bezier Warp doesn’t work for your image maybe try corner pin or some other warping tool. Hope this helps!
http://www.TimSFranklin.com