Okay, I think there are a few steps to this process.
1) You need to get all of your old Legos together. They’ll probably look something like this:
2) You need to become graphic designer Elroy Klee. He looks like this. You MIGHT need to shave your head (I don’t know if you’re bald or not; I don’t make assumptions):
3) Okay, cool, now that you’ve done all of that, it should be really easy to assemble one of these awesome wigs made out of Legos. It is? Cool. Get on that.