Don, there are more than a few books on doing auto interior. My wife got me one by Don Taylor and published by California Bill's Automotive handbooks. It says 19.95 on the back cover. While I never be as good as the pics in the book show, it did provide me with a lot of good ideas and gave me the courage to attempt it on my own. So I did create and fit all the panels by myself and did have a knowledgable friend purchase the material and guide me in the material application.

The headliner was over my head so my buddy did that for me. I don't have pics on this computer But I shared some in Randys thread.

Doing the interior isn't that bad, (in 20/20 hindsight) 8-) , it takes planning and a direction, but you can do it!

On that top edge in back of the door, I would use some adhesive and secure a cleat, so that the top edge on your panel can be fastened. I would do this anywhere the panel needs support. Then you can use upholstery tacks into the wood.