Step 3: Screw this.

Picture of Screw this.
I admit that I hadn't thought this one completely through.  I knew I didn't want the hole for the fruit to dip too low so that the bottle would have as much stability as possible, but I also wanted to have the screws on the lower half of the bottle since the plastic is thicker there.  That means part of the bottle blocking access to the screws, unless you have a very tiny screwdriver...