Project_365_Day_109_I_like_the_comics on Flickr.

In this video Julieanne Kost discusses how the addition of color as well as supporting imagery can help reinforce the mood and message of a composite image that a single photograph may fail to do on it’s own. This is a great comprehensive tutorial outlining techniques that every digital photography ought to master in order to unleash their creativity to its fullest potential.

Note her comments on composition and how adding

There’s always a lot to learn from these videos by Julieanne Kost at Adobe TV.

If you want to get into compositing images , this is quite the good overview of photo compositing technique using photoshop.