I promise that if I do this, I will post the CAD files if I have any.

I'm thinking that stage 1 will be a flat cut fascia that is merely a direct trace of those 300dpi JPG scans you posted in that other thread. Just to get something functional and to have a chance to iterate on the size and shape of the button holes. Once I've got that, I can use that as a base for sculpting outward.