Just absolutely perfect colours. Well focused and presented. I don't seem to get " natural" shades as you do. Something I will have to work on. In the mean time don't change a thing, that's perfect :)
I always take flower pictures in the early morning or late afternoon. Or on a bright overcast day. I find it drives the colors to deeper richer tones. In bright sun the sensor in the camera is over whelmed with stray reflected light that causes the tones to become altered on the subject. Then take a lot of pictures add in a dab of luck and presto. Happy snapping.