I fishished the main body of the skirt and now am working on putting on the angled pieces. I added more supports since I was having a tough time getting the end and side pieces to play nicely. I have yet to do any filling or sanding but it is coming along nicely.
I used my Dremel MultiMax with grinding and sanding pads to bevel the edges. That worked like a charm. I scored the bevel lines first and it made it very easy to see what needed more sanding/grinding. My thanks again to Mike Brainerd from Bosch for the tool!