They actually look pretty good. My 2 cents:
- time the shot so that there is lots of natural light hitting the flower... a ring light will flatten the detail
- increase the depth of field by stopping down a bit
- wait for a lull in the breeze. When you are focussing this close, the slightest camera movement or object movement gets magnified
- I assume you are using a tripod and macro lens
- I also like to use an shutter release as removing my finger from the camera can cause a small amount of shake.
If you already have taken care of all the above, it's time to look at lenses that will provide sharper detail... ca-ching.
Are you doing any post processing? You can sharpen, define, add contrast and shadow detail.
I used a Samsung GX10 ( pentax K10D clone ), with a Pentax 50mm f/2.8 macro lens. The built in flash gave me a harsh look, even though I used a good tripod ( Giottos MTL9351B ) I still needed additional light...
The shot was taken at : f/8.0 at 1/60 ISO 100... I really thought it was a smaller aperture. ( when you say ' Increase the depth of field by stopping down a bit' does that mean stop down at f/11 to get more DOF... I've been doing this for over a year and still don't get what people mean by that )
I've thought of purchasing a shutter release too ( and recommendations ) but I'm saving for a car. ( I have my test tomorrow and if I pass I was going to ' treat' myself to a Epson R1900 A3 printer ! )
Thank you !