@LiviJay3 Hey I'm glad you liked my story! As for tips, well that's a tough one. I think it might be different for everyone, but I can tell you what helped me.
Point of Light took me nearly two years to finish and you can bet I had my fair share of writer's block to deal with. What I found that works the best is to immerse myself in the fandom, thankfully Star Wars has no shortage of content. Whenever I would get stuck, I'd just watch some Clone Wars, Rebels, the movies, etc.
I also gained a lot of knowledge and inspiration from Girls With Sabers on youtube. :)
As for plot and storyline, I always start out by jotting down the most important scenes that I want to see accomplished, even if those are going to be used near the end of the story. Those can be like a goal for you to reach, as well as a guidepost, something to keep you from wandering off the plot too much. For example, you know that scene in PoL where Rey fights Vallis and Ben pulls down a Destroyer? I had that planned from the brainstorming stage and I was always really excited to reach that point.
Don't be afraid to change things as you go, but keep the core elements that are most important to you. I think everybody does this. Stories grow and change as you write and think of better ideas.
As for writer's block, if delving into the fandom doesn't work for you and still find yourself staring at a blank page or keep opening and closing the file in the hopes that something will have changed (yes I've done this countless times) then I suggest skipping ahead of that pesky scene and try writing something more fun, like a later scene you had planned, then just try to slowly fill in the gaps. Odds are, you will most likely be able to come back to the troublesome spot and fill it in later.
That's all I got, MTFBY! ^-^