Here's a cross stitch of one of the paintings from Monet's Water Lillies series. It's a large pattern, would take quite a while to stitch and makes use of 45 different thread patterns, but other than that I think it came out pretty nice looking.
Cross Stitch Pattern Preview:
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The cross stitch chart is 120 stitches wide by 120 stitches high.
Pattern courtesy of Cross Stitch Pattern