I have started doing some tests with the kapton foil on the descent stage.

What seems to work the best for me is to cut a piece of kapton slightly too big. Then I shape wrinkles by warping the foil and putting kapton tape on the inside of the foil to keep the wrinkles in place. Then I use a combination of contact-glue, CA-glue and kapton tape to attach it to the lander. Seems to be working reasonably well so far…