As you know, I worked in Bubba's room this past weekend. I was able to tackle his bulletin board and frame it out, which I talked about here, and something that has been on my To-Do List for quite a while now.
Mitered corners can appear to be easy and yet seem self explanatory, but they can also be very tricky. Especially when the piece of wood you are working with has some detail or design to it. You really need to pay attention and remember what you are doing. The Mister, thankfully, taught me how to miter corners a while ago for another project. We happen to have a miter saw, but you can also use a miter box with a hand saw to do these cuts as well.
I had cut and placed a piece of wood up on the wall. Lined it up the way I wanted it along the bulletin board. I cut both of my corners at a 45 degree angle.I measured from the inside, of the piece of wood.
Always remember to measure twice, or three, or four times, so you can cut once.