Here is a slightly modified version of the Shamrock mosaic from brickartmaker.com
About this creation
While I was posting the Shamrock mosaic for brickartmaker.com earlier today, I had the idea to use a green baseplate, and only use the lime green bricks to outline the Shamrock.
The results looked pretty good, so I thought I would post them here for you to see.
Instructions (and an image) for the original mosaic can be downloaded from: http://www.brickartmaker.com/design/0047-03/shamrock