This is the big moment, where everything comes together.
- Screw the tailpiece to the neck with a long screw. (Yes, it's already glued, so maybe this is overkill, but whatever - if you're reading this, you are a novice like me and can probably stand to screw in something else, just for practice.)
- Put some glue on the pieces of the neck that will rest on the blocks.
- Lay the neck on top of the blocks and clamp it into place until the glue dries.
- Once the glue is dry (at least 30 minutes), you can screw in the middle screw of the bridge.
My cigar box didn't have a latch, so I also bought a couple small 2-hole hinges (maybe 2"?) so that I could screw my lid shut. You could also staple it shut, or use some sort of latch so that it isn't permanently closed.