This is a Faerie rose from a neglected part of our garden, first on white, then via an inversion of the Luminosity channel in LAB color, on black.
By the way, the original Photoshop files for these two images are huge, each a bit larger than 12″ X 24″ at 300 dpi (this leads to a file size of a couple of hundred megabytes, no wonder my hard drive space disappears so fast!).