After publishing Molokai Reef (MR), my son Darren asked for any advice on writing his Sci-fi novel.
My 2 cents on writing - in no particular order...
1. Just write, don't edit. It's easier to go back and edit rather than write new material. The problem that I've discovered is that I often delete paragraphs, characters, and/or chapters that I've written. So what's the point in editing if they end up in the trash bin?