Is there any reason why a service should not flow, go well, and enable people to be focused on the Lord because they are undistracted by mistakes, clangers, and black holes of time and space occurring in a service?
Of course not. There is no reason why a service should not go well.
But it will take preparation, planning, purposive production and, well, you get the picture!
Prepare. Prepare. Prepare.
Be perfect. It's okay to be perfect in worship leading. People will be grateful.
PS For clarity: preparation includes prayer!!