I am going to pick Pete’s Pegs, because I used to buy from the guy who owned the website before he retired. So, the first thing you need to do is figure out what pegs you are going to use. I think each peg should have it’s own “space” to exist and not be crowded on the board.
I have used cribbage boards where the holes are so close, the peg heads are wedged up next to each other, and I find it unattractive. Now, you are ready to begin designing your cribbage board.