My first attempt at making a transparent image

Original

http://www.josephjgraber.com/wp-content/uploads/2014/07/IMG_3481.jpg

Green background

It's easier to set a solid color background than it is to make one transparent.

Transparent background

Sorry about the grey outline on the beard (and green outlines elsewhere), I didn't notice it until I saved and closed it and, without their being enough of a stable background, couldn't remove it.