Good Morning, Trala!
Here's a few pics to clear the canopy thing up...
You want to keep the top of the plant as flat as you can while you're training it...mainly to have an even field when the plant starts to stretch...chances are, it won't stay flat once the stretch begins though.
Indoors, a flat canopy is important- it assures that all growth tips are getting the same intensity of light-
Outdoors, it's not as important, because it doesn't matter that some tips are 4 or 5 inches farther from the sun....but it's still a good idea to keep the canopy as flat as you can, especially if you're trying to grow a somewhat short,wide, bushy plant.
This second pic shows what we're trying to end up with- the red circles are the main branches that were initially tied down, and the blue is all the secondary branches that fill in the center of canopy- they don't naturally grow evenly distributed throughout the canopy, so you have to "steer" them to where you want them to end up- there's usually a lot of them, so the training will get a little intense for a week or two.
(This plant has 7 mains instead of 6, because when I topped it- the top grew back...that doesn't usually happen)
So there ya go- hopefully I cleared up a few questions- Mrs.C. says I suck at explaining stuff,so if you look at this and say "What the Faaaak are you talking about?!", I'll give it another shot!
There's usually a little leaf pruning involved with this training, but since we're working with clones, I'm not sure they're going to need it- they appear to be doing fine without it so far!
To make matters worse, she's a smoker, and she's in a non smoking facility (as all dementia care facilities are, I hope)- she almost got the boot yesterday when she lit up a cigarette in her room, so today Mrs.C. is taking her some nicotine patches and a Chantix prescription....we thought we confiscated all her smokes yesterday, but, as crazy as she is, she still managed to stash a pack somewhere...
Have a great day, Trala!