Gerry: I’ve played around with removing creases and wrinkles using the clone tool. I start with the opacity at about 50 and density at 70 or so, take a sample under the crease and then move smoothly upward over a very small piece of the crease. A little at a time, I’m trying to make a more gradual color shift from dark to light, and the clone tool seems the best at doing this. I think it’s easier to get rid of creases on clothing than it is on background. Getting larger areas of exactly the same color to look blended and smooth is harder. I worked a little on your picture and got rid of the most obvious creases.
Bottom line: Experiment with the clone tool. You may find it helpful in getting rid of lines and creases.