photos and sketchup model here for now
Step 1: Get Wood
Cut 4 pieces, I then used a block plane to get them the same width, but this really isn't necessary as your going to be sanding them to size later anyway, so don't bother.
Step 2: Get into shape
Then you can use this first shape as a template to make the others, you will need 8 in total, mark them out but don't cut them out yet.