Never worry about leading a ride (how short or long it is, weather or not you get lost, will the people like the ride.) the people just want to RIDE, anything is better then nothing, so what if you get lost, all of us that have lead a ride have gotten lost at one time or another and that just adds another adventure to the ride, don't worry so much on weather you are doing a Good job of leading it takes time to get good at it, experience will teach you. Just follow the speed limits keep an eye on your group, don't ride like you are in a big hurry, if you see you are loosing the group slow down or pull over (if possible) to let the group catch up or have a designated place or two along your route to meet, the more times you lead a ride the more you will want to lead, the group will take care of its self.