Measure and mark where you want your lines to be. Draw them on with a pencil then start adding the masking tape along those pencil lines.
Cut the tape with a craft knife on the ends to get a straight and clean line. Continue to cover the entire area you would like to be masked. Press the tape down well.
Raise your game up with some disposable cups. Add several light coats of spray paint one right after another to get good coverage.
Once your entire game is covered on the top as well as the sides, let it set about 15 - 20 minutes.
Then peel back the painter's tape and allow the entire thing to cure at least 24 hours before flipping over and completing the same steps on the back.
You can also paint the discs if needed. I like to paint these on one side, allow to cure at least 72 hours, then flip them over and paint the other side. Again, allow to cure for 72 hours on that side as well before use. These discs will take a lot of punishment so you want to make sure the paint is on there really well.
Then just assemble your game and you are ready to play!