Andy90, i really like that shot.
Thanks Mark, its the first shot thats actually got some comments on my Flickr page too - and I'm well pleased with it.
The Canon 100mm f2.8 Macro lens is a cracker when you get the focusing just right, the DoF is tiny though, you can see it run through the left and the right hand petals as a very thin line of sharpness. I think I'm just beginning to understand how the lens handles!