You can also add hand drawn templates and shape templates as well.
For shape templates like banjo heads I've printed out a template downloaded from the internet. I use a hobby knife to cut along the outside of the pattern and where the peg holes are to go. Leaving tabs along the edge so that you aren't just cutting out a large hole. Cut alongside the first cut so that the end result is like a line drawing cut-out of the edge of the pattern. Then use a sign makers method of filling a cloth bag with chalk, lay the pattern down and tap the pattern with the chalk bag. When removed you have your layout or pattern transferred to the build. Made a msitake, simply wipe and redo as may times as you like.
I just made these:
Which I modified from these:
Which I reformatted to work with a 4" piece of 1x3 (3/4" x 2-1/2") for headstock material, assuming a 1-1/2" neck width.
Printed them out and glued them to piece of plywood, then bandsawed and filed them to final shape. I just did these two rough cuts, they have yet to be routed. We'll see how they end up!!