I don't believe that will lay down flat using the method you are suggesting. I certainly am not an expert but I believe that skin has expanded some and will not lay flat unless you take some material out.
I think I would take a straight edge and cut straight down the bulge then lay it down flat and cut again where the edges join. Then put the glue in and clamp it down.
There will be a fine line there where you made the cut but it can be filled with many different fillers.
Just an idea. Hope you get it worked out.
