I made a corn hole set for my fiance's family's lake house as a Christmas present in 2018. While I followed a template for the actual construction of the boards, I lasercut stencils and painted a personalized design on the top. I mainly followed the template from Lowes, here, and below are some photos of the construction of the boards and the final result in use at the lake house.
A more detailed description of my process can be found at the bottom of the page.
Board after construction
Painted board set with matching bean bags.
One of the boards mid-game at the lake house