These types of borders are as complicated as they are beautiful.
Much more complicated than rod borders!
We will break it down into smaller segments, and work slowly and carefully to acquire a mastery over this advanced topic.
If this is completely new for you, watch only the first 3 parts for now (the basic principles), and then when you've had some practice, come back and watch the rest. Each lesson has a ton of information, and it might be a bit overwhelming when watching all at once.