@ASpaceKatzen Why thank you first of all! I'm glad you like my stuff!
And second of all, sure, I can share some tips!
When it comes to scifi, it's often difficult to think about what hasn't been created yet. You often have to become an inventor of sorts, especially if it's based in the future. You can kind of imagine that none of our current technology is relevant anymore, and you have to creat better versions that are more easily accessible and have more features.
My other tip is usually when it comes to scifi, there are a ton of new names, places, people, and items. It's great to make a list of these describing each and labeling. For example, in Spartan 118, I created the planet Atrius. In order to keep things straight and help me remember what things were and where, I wrote a note detailing a general description of the type of planet Atrius was, where it was located in space, how many oceans it had and their names, (mine had one large continent, but the names of each one), the important major city and place names, like Alkaid City and Fort Cause, and I even created a diagram of Alkaid for reference in the book, because cities can get complicated, fast.