I also find that it's useful to take a cue from existing films in regards to how to plant subliminal ideas about a character in the mind of the audience with the use of names. For example (and these are really random) in the Pirates of the Carribbean films, the character of Jack Sparrow indicates flight and freedom, Elizabeth Swann indicates grace and elegance. (I encourage you to watch the commentary where the writers discuss the naming of characters.)  This takes place in many films though, one of Andy Tennant's earliest films, "Fools Rush In", he names his leading man, a stodgy NYC business man, "Alex Whitman". He then falls in love with a beautiful Mexican woman, Isobel Fuentes. Looks closely at Alex's name, it almost breaks down to "white man" highlighting the diversity between the two leading characters and the cultural differences between them. It can be as subtle as that, or as straightforward as naming your character, "Swann" because you need to her to be associated with class and grace. Make sense?