Dagmar Pezzuto has prepared a tutorial on the two color cluny tatting which we studied on Oct. 21, 2013.
Two Color Cluny Petal Tatting Tutorial by Dagmar Pezzuto
Back in 2010 we worked a cluny bookmark with only a few cluny petals. Perhaps you can try the two color weaving process on them for practice.
Cluny Bookmark, part 1
Cluny Bookmark, part 2
Cluny Bookmark, part 3
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I really like this and will give it a try, Thank you for posting