Once you start thinking about photos, it can get quite complicated, but the results can be quite nice.
Take this photo for an example, its one I took a few weeks ago, the bright spots on the car from the sun was intentional, make it looks shiny, I didnt use it before because on some spots on the car, you can see evidence of the sloppy car wash I did earlier in the day. (that and I forgot to put the driver side window up)

I should warn you though, the photo is just over 2mb in size. (for the rare few on dialup)
Photo