Photoshop Tutorial : Creating Smoke Effect (http://www.youtube.com/watch?v=RQii4eDI_wY#)
how to create a smoke effect in photoshop, and to achieve that I used a pentool and some photoshop filters.
It’s pretty simple, although it can be quite hard to create a natural smoke with the liquify filter, the best thing to do is to play with the brushes and with the tools to achieve the desired effect.