Sample 1

 

Sample 2

 

Right-click to download this Darwin image. It has a transparent background.

 

Right-click to download this Darwin image. It has a transparent background.

 

OR... you can simply download this Powerpoint file with the samples and a couple of blank slides and the Darwin images already loaded. Just delete whatever you don't use. When you're happy with your PPT slide, capture it and save as a JPG.