2005 Mustang GT Door Panel Leather Question

Passenger side door leather covering on the panel unraveled from the panel due to heat - it actually came right off - what is the best way in order to repair this - is this a problem on these Mustangs? I had it happen on the D/S but that was due to the rain coming in because the windows weren't going completely up when the doors were closed. The dealer fixed it at that time - I would rather do this myself and save the deductible. Thanks!