You will need:
a. A 2-liter plastic soda pop bottle.
b. Glitter glue.
c. A sharp pair of scissors and a little bit of tape.
1. Cut a 3″ high cylindrical piece of the plastic soda pop bottle. Using two or three pieces of folded tape, affix your template behind the plastic, along the inside part of the bottle. Using a marker, trace the outer lines of the template only. Do not trace the details of the design.
2. Using a sharp pair of scissors, cut just inside of the lines you traced, making sure the lines are not left behind, as well as making sure to cut all around the circumference of the bottle. You are left with the shape of a crown that is ready to be designed.
3. Again, using two or three pieces of folded tape, affix your template behind the plastic. Using glitter glue, trace the design details.
4. Remove the template. Let glitter glue dry for approximately two hours.
see rest of article, templates and instructions HERE
Do It And How 
Whoa, is that ever adorable!!! 🙂