1. Good communication skills.
2. Ability to work with others as a team.
3. Willingness to learn.
4. Self-motivating skills.
5. Keen attention to details.
6. Good reading skills.
7. Good marketing skills.
8. Ability to take risks.
9. Excellent social skills.
10. Resilience and can-do skills
I believe any affiliate with the foregoing skills can easily become a star in SFI.
You can give them a try out too on your own affiliates.