Don't worry if things don't go as planned. No event ever does. Remember that people are understanding. If something is amiss, remember to pause and take a deep breath first, and don't be hard on yourself. It can be helpful for those planning the service to each have a memory or story to share about the deceased at your fingertips that you can share out loud if you need to buy time during a glitch. Sometimes those unforseen moments--when met with a postive response--are actually the most moving.