diy-bow-maker-how-to-make-perfect-bows-dreamalittlebigger-01 Created By: Allison  | Updated: 12/02/2020 | Leave a commentThis post and photos may contain Amazon or other affiliate links. If you purchase something through any link, I may receive a small commission at no extra charge to you. If creating your ruler by hand, mark the center of the 20″ piece of wood lightly. To the right of the center mark measure out the next 10″ marking each inch and half inch. repeat for the other side.