You can clone any part of the plant, i personally prefer to do micro clones with me they tend to root faster, dont waste money on a dome, I have a nice tupperware where i put my clones in and then just put plastic film wrap on the top making sure no air gets in for the first 2 days it is very important to have high humidity my case I am always in the 90s at this stage
After 2 days I will open them for a few minutes and let some fresh air in and close the plastic film but this time leave a little opening for air to get in, then start to let more air in gradually everyday, works for me and dont have to buy no dome, The only thing I use is a heating mat