This will be of very little actual use, a simple decal will almost always be easier, but just to see if I could do it... a shamrock made entirely as a procedural material:

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No way! Even with the free project files, a description of how you built each of your great materials alone will make your book well worth the purchase price!

just in time for St Patty's day! I am gonna have to look at the project because that's incredible, making that completely out of procedurals!

Wow that is amazing.... your making a book? When is it coming out and how much??

better than the smiley face that was out awhile back...nice !!

I posted a picture of my shamrock material in the texturing forum at CGTalk and some wag asked "More importantly, can you make a procedural material for Guinness?"

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No you're talking! Being both Irish and Scottish..I can relate...but this wag wants to know...how about a thistle?.. a wee dram of Scotch?....and the list goes on...

great job..I bow to your genius.

Thanks a lot!

Could you post one with four leaves as well, for good luck sign?

Thats a good one Robert ,Ken must be loving it

Four is actually easier than three. I bet you could figure it out from the example.

Three leaves had me stumped for a while.