1. Avoid alliteration always.
2. Prepositions are not words to end sentences with.
3. The passive voice is to be avoided.
4. Avoid clichés like the plague. They're old hat.
5. It is wrong to ever split an infinitive.
6. Writers should never generalise.
Seven - be consistent
8. Don't ever use more words than necessary. It's superfluous.
9. Be more or less specific.
10. Exaggeration is a billion times worse than understatement.
I saw this doing the rounds on Facebook with no clue about who originally wrote it, so did a quick search and found THIS much longer version on a Plain Language website, Apparently, The first set of rules were written by Frank L. Visco and originally published in the June 1986 issue of Writers' digest. The second set of rules are derived from the late Pulitzer Prize winning William Safire's Rules for Writers. I like the simplicity of the ten set out above. Happy writing!