I need a single image photoshopped. Very simple.

I have a photo that I have taken and edited. I now need to extend the wall and table in the background. I have done this myself, however the outcome isn't as neat as I would like. It is a small job and someone who is familiar with photoshop or similar programs, will be able to do it in 10-15minutes, maybe less. I need it to stay in the same resolution and need in JPEG form. I need this ASAP. Within the next 12 hours. I have all of the images to send the correct person. Please advise if you can do this simple task to a high quality. Thank you, Clare