I'm looking at the copyright on the pics, I'm hoping YOU are david wilkes?If so, nice color balance on both, very rich. My only thought, and it's only a preference, is the depth of field is a little too shallow for me, more in the first shot. I don't know if it's possible with the dimage macro to alter that or not. My Nikon in advanced mode lets you have control over all aspects of the camera. If you just got it, you're off to a great start. Try some in native B&W to check contrast levels.
Very nice photos, of flowers. hint, hint.