Thanks for the support😊. I actually did this by accident. I achieved the effect by taking a photo with a very dark background and a well lit subject. Then by editing the photo's contrast and brightness I was able to darken the background completely... What I would rather suggest is if you're using a DSLR use a black sheet of paper behind the flower and set the aperture as large as possible - F/ 4.5 should be perfect. When doing this you won't even notice the paper in the background. I hope to see your version soon😊... Good luck.