I think being there for your team is the best way to build a team with team spirit.
Listen to what they have to say about what they want out of their business and explain how they can achieve it.
I just joined SFI two months ago and my sponsor has been great.
He has kept in contact with me, praised me when I reached fast track and taught me to do the same thing with my team.
That's what team spirit is helping the next person succeed.