2. Measure and Cut Tombstone Shape
Take a cardboard box and pull it apart so it lays open. This is your canvas, you lucky artist.
Using your ruler or eye-balling skills, measure and draw out a basic rectangular shape. If you want a curved top, trace the top as such using the bottom of a bowl that size (or with a drafting compass if you have one). Or, try to make a triangular-topped one like the picture.
A small tombstone is about two feet tall, but more difficult to read from afar. A ridiculously large one will need big lettering and more paint.
I highly recommend leaving a bottom on your grave-marker. Do so by measuring an extra fold of rectangle all along the base.
Whatever you draw, repeat the exact same thing on another piece of cardboard. You’re making a three-dimensional tombstone, you know.