Air layering help!

There's a post on air layering but I can't understand the cuts and teasing it open with a cocktail stick part, should it be totally removed or only half way or neither, would someone mind explaining or better still showing a photo of what is required to wrap in moss?

I’ve done air layering of other plants but never tried cannabis but I don’t see why it wouldn’t work. Usually it’s done for difficult to root or woody plants. The slice is lIke the photo. You need a fairly good size stem. Then put some sphagnum moss or a damp root cube in the plastic As in the photo. Brushing the slice with rooting hormone wouldn't hurt. Good luck. I’m interested to see how it turns out.

Thanks a lot guys I couldn't get my head around the cuts.

Cheers SD