Thank you for your question and welcome to Just Answer.
If you are like me, pictures help! So instead of stumbling through trying to explain it, I'll refer you to websites that have pictures available (I'm not allowed to copy them here because of copyright laws).
Here is a good one.
On the right side shows a good diagram step by step here.
Here are photographs, but I don't think the quality or descriptions are quite as good as the others.
I hope these help! Please let me know if you need anything else. If not, please don't forget to "Accept"
Regards,
Ryan
Professi&onal Researcher
I can find the answer for your wedding questions fast and accurately!