Step 3: Off with their heads!
So, cut necks off, angle them up as much as you can, if you're lucky and you have a Dremel, this should be easy. But if you're like me, and your dad says "yeah, I have a Dremel" and gives you an inheritance from your grandma of a thing called a "Vibro-Tool", then you are shit-outta-luck because this will take you hours. :) And it will scare the crap out of you when you turn it on.
Anyways, you're going to need to sand the neck so that it's smooth and angled upwards.