this could be useful but not so usefull
Step 1: You Will Need
Cutting tool (i had a Dremel when i started but then it broke)
Step 2: Cuting the Top Off the Bottle
use a cutting tool to cut it off
Step 3: Take the Cap...
poke a hole though it, continue until its big enough to use a Dremel or sandpaper.
Step 4: SANDING
now to sand it so its a clean edge.
Step 5: Take the Cap and the Bottle
now take the cap and the bottle top and glue them together with hot glue