Step 1: Grab some wood
I made one out of rough cut Maple and one rough cut Mahogany with Ebony stain.
Step 2: Prepare the square blank
Step 3: Mount it to your lathe
get the screws and the matching drill bit. Tape off about 1/2" up the bit (maybe a little less), this is simply giving you a visual stopping point (stop when you get to the tape) You do not want to go too deep or use long screws.
After the holes are drilled place the faceplate in position. Now, screw it to your block of wood and mount the faceplat with the block of wood onto your lathe. It's a good time to sand all the edges as well. start with 80 and go up to 320 grit.