I thought this might be a fun topic I have been working on editing and re-editing the beginning of my serial most of the past week, to give it the right feel and flow. As I go I've noticed (and run across, and been kindly advised) of some little rules that have really helped. I'd like to share them, and hear what pieces of wisdom helped you improve your writing.
The first for me was a wonderful trick of making long sentences make sense. As long as the subject and the verb are at the beginning of the sentence, it remains readable even despite further prodigious verbiage. It is even sort of magical how well it works to keep the eye from wandering off mid-sentence in confusion. Go ahead and try it if you aren't familiar with it.
The second was so stupidly simple that I couldn't believe I'd never realized it before a friend with an English degree pointed it out. I was finding that sentences together in paragraphs were losing the eye when they were fine individually. The paragraphs weren't particularly long, so I was at a loss. It turns out that the eye (and by extension the poor reader's long-suffering brain) likes to see long sentences surrounded by short sentences. Similarly, it is easy to read long words surrounded by short words.
So what little tips and rules have you found that improved your writing?