Get a designer.I posted in another thread re film design and what a designer can bring to the table.A designer in conjunction with the dp and director formulate the "look"involving lighting style,camera movement,framing and myriad of asthetics to bring a directors "unique"vision of the script to life.Costume and set design( or decoration) add texture,tone and depth to the vision.Get hold of Terence St.John Marners little book "Film Design" Screen Textbooks 1974,for a good insight into this seemingly forgotten role.Film designers,must be some out there just looking for experience on your movie.