Not a lot to show today, I just finished up a lot of hand sanding. After that I did the pyramids of the faux through mortises.
I didn't do a good job of documenting this process but I will try to explain. I have found that the downward cut on my miter saw seems to do a better job of this then cross cutting on the table saw. I don't know why but it does. I also think that it helps to have a Miter saw that doesn't have any real blade deflection and a saw that stays tuned up. I attach a scrap of wood to the fence on my miter saw, set the miter to 22.5° and make a cut. Then line up the inside edge of you stock with the outside edge of the cut you just made on you sacrificial piece. Then I used a screw clamp as a stop block. From here you simple make a cut, rotate the stock toward the fence make a cut and continue until you have done all four sides.
Then I take it to the table saw and using the miter gauge cut it a 1/4" long from the bottom edge of the pyramid.
Here they are in place.
Closer view.