I would suggest that anyone doing this, should make templates along the way as it speeds things up on the second door, and provides a uniform look. I know you can only see one door at a time, but my OCD wants pairs to look the same.
Here are a few pictures of the templates I made and used on the second door. Also, I highly recommend you take the time to make a metal template for the Miata handles if you aren't trying to weld in a sheet metal patch for the handles from the door vehicle.