Water drops after the rain..
Very impressed by the lighting. Did you find the subject like this, or did you somehow "create" the dark background?
My guess is that the use of a small aperture and maybe also lowering flash power was what created the dark backgrounds. Looks like some vignetting was applied in post.
Nice shots, OP!
Edit: looks like they were shot at f/5, so I guess not exactly a "small" aperture.
Thank you for the comments.
I did take those shoot after sunset where the light was a little dim.
I did use external flash (manual setting) pointed at the object from the side, the overly all image had dark corners after i did crop the image I did apply some vignetting and did lower the highlights a little in Lightroom.