Carl123,
Thanks so much for getting back to me.
I had a deadline to meet so the photos have already been delivered, but the good news is that my client was very pleased with the results. That said, I used a combination of the Liquify Push tool, a brush with black plus the Erase Brush tool to refine this rumpled edge.
In truth, this was my fault entirely because I failed to keep that sleeve straight during the shoot. My backlight may have been protruding slightly behind the sleeve as well. I thought this would be an easy fix with the Push tool, but that was not the case at all. Perhaps my failure to understand how to use this tool correctly may be part of the problem as well.
Here are the before and after images.
Thank you for your help.