Regardless of whether you work on a small set or a large one, you need to communicate well with all the members of the crew. By that I mean explaining very clearly to the head of departments what you want and need from them (Head of department will be dealing with the rest of the crew members. If this is a small production you will probably only have heads of departments. So you will communicate with everyone directly). If you are not satisfied with what is delivered or with someone’s work, be straight with that person and say it; otherwise it might complicate things later on.