Bar the initial point of the writer saying....
"He moved into the Form of the Raging Ronto, blade ready to strike"
....or whatever, I don't know anyone, myself included, who follows through any Form to point at all.
As in the films, you don't watch and go "Oh! Soresu! Good work, Obi-Wan". It's just pretty much you're an aggressive fighter or defensive.
That's it. To be honest, just enjoy writing a sword-fight and think about all you've seen on screen. Don't try to emulate a form in Wookiepedia because you'll end up writing something boring.