You should have one post of a series of short posts showing that you have planned ahead and that you are as ready for your shoot as possible.
SHOW YOUR PLANNING FOR THE DAY - AND BRING IT WITH YOU!
Shooting schedule (what will you shot, in which order, at what time?), including where, when, what time do people meet, what does each person bring, what NOT to forget, what documents to bring (preferably in a folder), how to get there, weather forecast (particularly if shooting outside), who brings make up, costumes props, who dresses the set, who applies make up and where + will they have guidance? Have a got a plan B? A list to make sure that everything is returned at the end of the day?