1. Use sections (Shift+S) to separate happy path from edge cases.
2. Use "/" in your naming conventions, e.g. Button / Primary.
3. Use blank pages "***" or "___" or "---" to create chapters.
4. Bulk name layers by pressing ⌘/Ctrl+R with all of them selected.
5. Use Ctrl/⌘ + R for naming for every new layer, frame etc.
6. Whenever you repeat yourself a few times, create a style for it.
7. Use sections: they don’t show in presentation mode; frames do.
8. Create a thumbnail for each of your files to make them easier to find.
9. Use "Save to version history" (⌘/Ctrl+⌥+S) to track changes.
10. 🚫 Stop using groups: only use frames for resizing, content overflow etc.
11. 🖼️ Cover page: key details and the table of contents of the file.
12. 🕹 Iteration Pages: As you iterate, duplicate page, add a timestamp.
13. 🧱 Component pages: Keep all components on a dedicated page.
14. ⏳ Before-and-after page: visually communicate the progress made.
15. This checklist was inspired by this post from Vitaly Friedman