First, I sanded the board really good. Then I used a rag to stain the wood. I only wanted a light stain so it went really fast. After it dried and the smell had faded, I used a ruler to mark all the measurements. Then I cheated and painted all the little markings with white nail polish because that was the smallest brush I had. Then I drew and painted the numbers with white acrylic paint. I didn’t do any sort of finishing because it won’t get much use besides sitting on the wall.