First, you'll need to begin by cutting out the necessary pieces. This is about the toughest part of the whole process. You can find the cut sheet at
Sirgcal's website
Once the pieces are cut You'll want to start assembly. I found the easiest way to assemble these pieces was to put some liquid nails onto one piece, then clamp the two pieces together. I would then drill a pilot hole, and use the counter sink bit to keep the screw head flush or slightly in-set into the wood (photo 3). Finally, I would screw the pieces together.