hahaha yes it was a messy first build. I have been doing what you said with masking but also depending on the edge I put a small snip half way across the tape in even segments which helps. It depends on the curves but I'm better at it now. Just another skill I had to learn.
Yes the electrics are dead. It's interstate at a mates house who was going to try and fix it. I'm getting it back soon and I'm sure I can fix it when I get it back. It was my first build. A good one to hang up on the wall as a reminder hahaha.