With Inklingo you print the shapes on the wrong side of your fabric (using an ordinary ink jet printer), so you don't need templates. Then you cut on the cutting lines. The cut out shapes still have the seam line showing, as well as cross-hairs at the corners, and match points along the way.
Now on to the sewing part of Clue 3.
You can find a link to Inklingo and also The Case of the Secret Garden (COTSG) mystery in previous posts as well as on my side bar.