First off welcome! Glad to have you here. 
So, now that you have a storyform, you should have a pretty good idea what your story is about. Not necessarily all the character and setting details, but the plot and thematic questions central to your story. Before we move out of the Dramatica program, there are still a couple things we can do. First, you can look at the Act order and think about how your story makes sense with that order. If your first Act is, say, Understanding, what does that mean for the plot? What do your Main Character and/or Protagonist (along with the other Overall Characters) need to understand?
Speaking of Overall Characters, the program has a very nice menu for planning out your characters. Give them a name, then select the Elements that define them. Be as Archetypal or as Complex as you like. (One caveat: the program might let you put a character on both sides of a Dynamic Pair, which is verboten.)
Anyways, once you’ve done that it’s time to start thinking about scenes. I… think the program has a way to make scenes, but I don’t remember where it is. (The Story Guides?) Write a scene, decide what Act it’s in, then decide what that scene furthers. Remember, you have an Overall Throughline, a Main Character Throughline, an Impact Character Throughline, and a Relationship or Subjective Throughline. Your scene should advance one or more of those. With that decided, next you have to cast that scene with the characters of your choice. Have as many or as few as you want, though 2 is optimal for a dialogue. Then keep doing that until you’re done!
Once all your scenes are planned, then comes the hard part: writing the story!