1. Use Steam Guard.
2. Make your profile public.
3. Become an active member of the Steam Community.
4. Dont cheat.
5. Do more OVERWATCH cases.
6. Do not kick anyone out.
7. Do not Grief your teammates.
8. Get praise (comments) by your teammates.
9. Like guides like this.
10. Add more friends.
11. Comment on many different profiles, discussions and guides like this one.
12. You can give an Award if you like.