I've been wanting to try this for a while. I used some photos I shot of Center Hill a few months back. I'm happy with the results considering this is the first time I've done this.

I tried some smoke photography tonight. I haven't done this before, but ran across a video on youtube and thought I would give it a try. (Video Link) I managed to get a few shots I liked. I'm not completely satisfied with the processing, but I think it will get better the more I work with it.