It's important to develop some clear, formal hierarchy amongst the leadership team. There needs to be a leader amongst the leaders, I think, but it's very awkward to do this when you're pretty young and self-conscious. It's so easy to lead in a heavy-handed way one minute and in a self-conscious and nervous way the next. It's also easy to respond defensively to another person's leadership. Clear boundaries and expectations help.
The leadership team leader needs to say often:
I'll listen to you and do everything I can to make you flourish, even if it interferes with my plans.
The leadership team member needs to say often:
We are behind you and support you and will do everything we can to make you successful, even if we disagree with you.