Respect is one of the key ingredients for any successful FOSS community. Most of us who work in FOSS are hobbyist & we need respect/appreciation/love/care. A leader needs to respect his contributors and vice versa. Success of your project does not depend on one individual but entire community.
2. Open expression of your views
What I meant by this is, if you have any indifference regarding any issue sort it out. Speak out in loud, don't sleep over it because that will impact the overall project badly in long run. At times you never know what/why someone acted that way or certain decisions being made.
3. Mentoring...Read more at Muktware