Off the top of my head, here are 11 ways to improve your writing.

1. Vary sentence length 2. Vary sentence construction 3. Use parallel construction 4. Put emphatic words at the end 5. Read your writing out loud 6. Avoid repeating uncommon words close together 7. Write in the active voice 8. Write about what something/someone does instead of what they are 9. Appeal to the senses, mainly the visual 10. Be specific 11. Delete unnecessary words