I bought 2 pieces of 1/4" mdf and cut it to be ~ 40"x30". Then taking a metal ruler I drew in lines to designate where I would be adding the (not routed) panels and windows. My wood (that's what she said) wasn't quite the right dimensions for it to be exact and since the panels are larger in height than width I had to adjust some of it, which you will see later on in this post.
This is a close up of the soon to be windows. I also got a 1/8" piece of the same mdf and measured out the windows and panels and then cut them all out with a box knife. There was no way I was going to get anywhere with a circular saw, it was pretty flimsy.
It rained that night and I couldn't paint anything and leave it out to dry so I layed down some tarp and painted one of the doors. The painting took longer than everything else.
The windows had many layers of the glow in the dark paint, then watery navy blue, then both mixed. Again and again, I had to keep hauling it into the bathroom to check the glow.