Considering diy door panels?

Just wondering if anyone knows what Gary Ball does for his panels? He has been the go to guy for Early B body super stock stuff for ever. He has it perfected I am sure.
I want the stitching in the vinyl or to be able to use heat for that if possible.
I have some Early B cars 2 and 4 door cars, and my wife's 62 Lancer, I will have to try making mine when the time comes.