Not only do you need to model what you want, but you need to bring your group to higher threat opportunities by building their confidence and trust in you and each other. Simply begin your project with simple low threat activities. Accomplishing these will provide the spring board you need to reach for an even higher risk activity. Confidence and trust are the foundations of followership. Process what you do together - Doing for the sake of doing is not very satisfying.
All groups form for reasons.
Anything worth doing is worth evaluating. Make sure that process includes the praise for the work and workers necessary to help them know how good they are and an opportunity for them to provide their observations. The smart leader learns to provide a forum for those opinions and to listen to them.