Just about finished a door card today. To be fair, 5 hours was spent learning how to sew with the new sewing machine.
The door card is made of 2 layers of 3mm hardboard, so the heads of the BMW fixings are hidden between the two layers.
The door opener will have a chrome surround. It sits smack back in between the inset, between the 2 stitched lines. I bought some Austin Healey 3000 handles of ebay which should look the part when fitted.