I used the Photoshop FAQ to lower my truck about 3/4. Never used it before and was surprised at how easy it was. I started with some crappy photos unfortunately. Never a good idea to have a pole in the background.

I've never posted a photo before, so if it's super huge or something sorry in advance.
This is before:
http://i43.photobucket.com/albums/e378/olblue81/olblue.jpg
This is after:
http://i43.photobucket.com/albums/e378/olblue81/chop-of-ol-blue1.jpg

you did good for the first time. im so proud! :)