Cut out a piece of the patch just big enough to cover the hole.
Clean the patch and board (area that will get glue) with an alcohol wipe - allow it to dry.
Apply glue to each side (patch and board) and let the glue sit for a minute to get tacky.
Place patch on board over hole and clamp it down (bar clamps or hand clamps work best) for about 12 hours. You can also use a heavy weight (> 10 kg) if you do not have clamps. That should do it. If your patch is too big, you will have to do little sections at a time (whatever you can compress with weight/clamps), that is why you don't want to use the full patch that comes in the repair kit.
As always, if you need further assistance, please contact us.