It's pretty easy- 1st thing to know is that I cheat. I use a lot of rooting hormone - probably more than necessary but I don't argue with success haha.
I wish I had a plant big enough to provide one so I could do a photo tutorial but I'll try to be clear.
Start with a small jar 1/2 full of cool water. Stir in about 1/8 tsp of rooting powder. Locate your target clone. I like the biggest cutting I can fit under the bottle I'm going to use as a dome. I want as many leaves as possible in the canopy of my target. You want a long internode too. This will be your trunk & the deeper you can get it the better it will stand up. Take your target just above the next lowest node (makes the donor look better- has no impact on the clone) & on the way to the jar of water cut just below but don't damage the node on a 45° angle & put it in the water. If it gets stressed & wilts leave it in the water until it perks up. It could be 5min, 2hrs or a full day.
Next Fill the pot to about the depth the stem will reach & tamp lightly. Sprinkle another 1/8 tsp or so of rooting powder on top & stir into the soil about a 1/4 inch deep & fill the rest of the way with soil. Use a screwdriver, pencil etc to make a hole. Take clone from the water & dip it in rooting powder & plant it. (I've never had one get clogged by powder but I hear it can happen. Use gel also if you have it & you're worried about it) Use a pipette or similar & send 2 or 3 squirts down the stem to activate the hormone, trim the fan leaves off of each other & to keep from touching the dome but leave all you can. Then mist the clone lightly & the dome heavily, cover. The 1st morning I remove the dome until it begins to wilt, mist clone lightly & dome heavily, replace dome until it peaks up. Let it rest an hr or so & keep doing this from now on until it doesn't wilt & need the dome anymore. (Usually 5- 7 days)
In the mean time on the 2nd morning use the pipette to water a small section of the soil, away from the stem Day 3 continue as before but no more foliar feeding. By now it should be standing without wilting for most of the day. i still dome them at night for a few more nights. Day 4 water another section- again away from the stem (make it work & send the roots searching for water) From here I consider it done & a vegetating plant. She's still delicate & you need to be careful not to over or under water her & no nutes. Dome if it wilts but it shouldn't & that's it- I never lost one doing it this way.