1. Add details such as Name, Phone number, bio etc. to your Steam Account
2. Become an active member of the Steam Community.
3. Play games often without cheating.
4. Get praise (commended) by your teammates.
5. Do not kick anyone out of the game.
6. Do not block your teammates and do not harm your teammate in the game.
7. Write guides like this one.
8. Like guides like this.
9. Add more friends.
10. Comment on many different profiles, discussions and guides like this one.
11. You can give Award if you like.

Edit: And do more OVERWATCH cases.

Thanks!