This is a really interesting talk at Harvard, speaking about the clarity of writing and considerations for finding, adapting, and personalizing your style. They speak about writing in a general sense, not in a creative sense. But I think it can very much be applied to our own writing.
I did have some issues with some of the second speakers opinions, not what she brought up, but what she inferred from it. The other two where much more open minded though. If an aspiring writer has the time, I would recommend watching this for figuring ways to 'touch up' your writing.