I like the addition of the visual descriptions. one thing I use when writing sw fanfics a lot is using emotions and metaphors to describe a ship, place, character, etc. The biggest key is to immerse yourself fully in the imaginary environment. Try to develop a virtual tour of the setting mentally. What this does is create a false, yet effective substitute for actually experiencing something. People like John Steinbeck wrote about what they've personally experienced. This fills that purpose. Also, whether or not you're writing, imagine each of the characters in your fanfic interacting with each other. once you have a specific archetype established, you'll find the dialogue remarkably lifelike. Another key with dialogue is consistency. As long as the character's "voice" is consistent, he/she could high-strung, enraged, quiet, emotionless, etc., and sound perfectly legitimate. A bit of background information early in the story (which chapter depends on each chapter's length) can also intrigue readers. All in all, balance is crucial. Hope you find this advice helpful. I'll be looking forward to the next chapter.