Source:
Title: 
Spacing:   
Alignment:   Top:   px
Border: Bottom:  px
Width:
 px
 px
Left:  px
Height: Right:  px
You must add the complete URL for your image in the 'source' field.
eg. http://www.yourdomain.com/images/your-image.jpg

The rest of the fields are not essential but will help if you know the details.