Knowledge of the religion
A person, who wishes to lead worship, should be aware of the basics of his religion. Whether he is a Muslim, Christian or any other religion, it doesn’t make a difference at all. The important thing is to know what you are doing.
Keep yourself clean
Whenever you are going for a prayer, make sure that you are neat and clean. This applies to even those, who are not leading the worship. Wear tidy clothes and make sure that you take a shower at least a couple of times in the day.
Practice before leading
Just like any other important thing in life, we need to practice religion. This is how we will be able to achieve perfection in it. If you wish to lead the worship, make sure that you practice it alone first.
Whatever you say in the worship should be loud and clear, so that the people understand what you are talking about.