Looks like a Bellis? Neat little flower heads on that one. Good use of negative space as well. Were this my photo I had pulled down the highlights ever so slightly as they are rendered on the very bright side.
I noticed you have stacked 2 close-up lenses (5T & 6T) onto your 200/4 Nikkor. You are probably aware this is against all textbook advice, however, as always, it is the final result that counts.
Do yourself the favour of putting the strongest dioptre lens first (6T), then add the 5T. That should cause the least degradation of the image quality.
Adding extension to the 200 is also a good way of bringing it to closer focusing, but as the focal length is long, you do need substantial extra extension in order for this to be helpful. Combining some extension with close-up attachment(s) might be a solution as well. Only trial and error can point to the most appropriate approach.
