Chrysanthemum

My good friend Mike who accompanied me to the staff Christmas do last week (or did I accompany him?) gave me a nice bunch of flowers last week and this is one of the white chrysanthemums. It has taken absolutely ages to take the dust off the picture, so a sensor clean is urgent now. I am tempted to buy a wet sensor cleaning kit, as I have used the blow brush method, but the dust simply moves around inside the camera, I am sure. Does anyone have any advice?

treatment; dust removal in lightroom, then niks color efex pro

exif info disappeared for some reason; lens 100mm, 0.3 sec, f 32, ISO 400