So here are the tips.
1. Grammar can increase your chances because good grammar makes us know you are professional.
2. Maturity also shows that you are professional.
3. Never being punished on the server before.
4. Don't use such slangs in your application as Lol, xD , Lmao. It makes you seem really immature.
5. Just being honest overall, if we find out you were lying on your application you will lose your rank.