Well the VN is a demo of the IF, so it encompasses a bit of the story without going too much into detail, while the IF is a more in-depth experience, with more choices, etc. That, and the PFM VN was the first story I ever wrote, so there’s a lot I’ve learned since then, both writing and coding-wise. And I do hope to keep improving as time goes on.
I am a bit self-indulgent in the things I write, so I know it might not be everyone’s cuppa, but I am happy to hear it’s enjoyable enough!
Now, how to start writing hmm, to be honest, I don’t think I have any helpful pointers. I just read a lot, so I found that writing came naturally when I started. That said, I would recommend looking up those how-to videos from actual screenwriters, as they offer insight into the delivery of the scene, dialogue, and presentation. Their tips can be used for ‘regular’ writing, too, not just for movie scripts, so you might find them helpful.