Step 2: Messing with the bottle
For illustrative purposes, I drew a line on the bottle showing you where I plan to cut. If you have a fondness for markers, feel free to do the same, but it's not really necessary. Just make sure that the notch at the neck of the bottle is wide enough for thin branches, and the body of the bottle has a hole large enough to accept whatever fruit you're going after. You may have some issues going after watermelons with this thing, but then again you could just walk up to it and pick it up. Again with the silly questions.