I used 2 Dynon 10 screens in my panel. I wanted them located as far towards the outside as possible to keep them centered in front of the pilot / passenger, and I also wanted to locate my breakers below the screens. This required some "adjustments" in the panel mounting frame.
With the panel cut out and the radio plates riveted in place, I covered the panel with 3M carbon fiber look vinyl, and then installed the avionics.
I found installing the avionics very rewarding. It's fun to take a new component out of the box, insert 4 screws and then stand back and admire..... Yippee!!