This is my first attempt. I assumed it would be difficult so I choose a smaller spread of branches and something closer to the ground so I could figure out my technique.
Well the zipties, the measuring, and the plastic all worked out just fine. The hole was a bit of a fail. It was glued on the dorsal surface of the plastic- mistake. Because it creates a lip it does not allow ample flow (I just poured a glass of water into it) without (I'm guessing) torrential rains. Also I think it could be weighted more heavily in order to cause the water to run to the hole and not elsewhere. For the next one I'm going to glue it on the opposite side of the plastic and fashion an addition washer to it. Also the branch space will be larger and less rectangular- rectangles are really not exciting looking.