I'm going to level with you guys. I had a post all set to go for today about Glee's Sue Sylvester and the tricky thing of writing for one-dimensionally evil characters. Then the finale last night actually ended up feeding into some of what I said, so as I was rewriting to acknowledge that, I realized I was dipping a little too far into spoiler territory. Usually I'm of the mind of "Once it's aired on the West Coast, it's fair game" but since this is the finale and since I have a strong feeling that some of you might still be waiting to catch up on the DVR, I'm going to bump that post until Monday.
The problem is that for the first time in a long time I don't have any posts on standby, so today is going to have to be a "quick tip":
If you ever give your script to someone and they come back with the note that the character seems a little thin, odds are that problem isn't going to be fixed by one four-minute dialogue scene that has the character talking to a sounding board about their past and their deepest desires/fears.
Thin characterization isn't solved by a patch job. Nine times out of ten I can spot these scenes because the seams are more than obvious. Nothing in that scene affects anything in any other scene, which is a dead giveaway that the scene was wedged in later. Take pride in your work. Put in the extra effort and rewrite several scenes so that this new information can resonate throughout the film.