I am trying to build this screen door. Exactly as possible. Most of the joints look like mortise and tenon with a draw boring dowels. My question is how to put the bottom part of the door together underneath the screen. It looks like 3 mortise and tenon joints with draw boring. Do you make the 3 mortise and tenon joints? One big joint with 3 draw boring holes? Do you glue the pieces vertically? Please let me know if this makes sense in what I am asking. Thank you for your help.