In between those img tags you would put a web address to a picture, but there is an easier way than that.
If you want to send someone a picture, you can add an album to your garage, then forward one of the album photos to your Motortopia friends. You can even forward the entire album or forward a slideshow of the album to your Motortopia friends. This is the easiest way.
Motortopian. Lover. Code Geek.