A repost of the Pansy after hopefully following the advice of a couple of kind members. Nikon 885 f2.8 1/101 sec ISO 100
A marked improvement. Next step would be to select the flowers, invert the selection. That would leave you free to complete the darkening where needed without crossing over the boundary of the flowers.
Thanks Phil, gave it a go but made a mess of it, will try again later.