Teardrops n Tiny Travel Trailers

cut out the screen area and the door area you just drew, with the bottom bevel sloped towards the plywood skin, match up the two. Remember the plywood is the outer skin! trace the screen opening onto the foam.
Now would be the best time to use a few coats of THE MIX as GPW recommends, this will make the wood the best it can be for rot proofing