The first two pictures show the marking process I used to trim the plywood, and the third picture shows the bottom plywood completely fitted.
I would also like to add some mistakes I made this past weekend. I originally thought that I could mix up the epoxy, and then do all the gluing and drilling myself. As it turned out, there were far too many screw holes, which meant it took a long time to fasten the rear panels. By the time I was done my epoxy batch had hardened and was unusable. Then, not learning from my mistake, I tried to do the same thing while fastening the front panels but figured I could move a little faster. By doing this I didn't take my time to make sure all the screws were fitting properly in their corresponding holes, and at some point the screws and holes got off by about a half inch, which meant when I was doing the front, the panel didn't line up. Also my epoxy hardened in the process. I broke my number one rule which is to always take my time and ask for help when needed. Well, the lesson has been relearned and I will proceed with caution this upcoming weekend.