For most people, flourishing is either something that is just an addendum to the writing and so some weak lines are added, or for others, it is the crux of the piece because the flourishes hide the mistakes in the lettering. I have spent a lifetime looking at flourishes throughout our calligraphic history and I can assure you flourishes, like letters, should be taught as a separate course in and of itself.
I had so many people ask me how I make flourishes look so easy and what the trick were, and I can categorically state, there are no tricks…