If your goal is to achieve the studio portrait look--then enter the world of set-up to get exactly what you want, which is necessarily controlling all of the elements. What is the point of all the effort trying to 'mimic' the result when you could spend the effort to get the result?
My answer to that question is that it is too much of a hassle and not very much fun for me to mess around with backgrounds and artificial lighting so my goal is not to achieve the studio look.
Seriously though, for a rose portrait on a black background, I suggest you invest in a black background and start playing around with a few different methods of artificial lighting.
see here
https://garden.org/thread/view...
