Hi Gaetan: The flower grouping overall does not seem as tack sharp as it should be. Then the flash has caused some jet black shadows especially so on the stem. I am not a flash user on this type of flower picture due to unwanted black shadows.
Your Nikon D750 has such a great sensor that will do a really good job in low lighting situations without the use of flash. You will need to use a tripod with available light as It is very difficult to hand hold 1/60 sec. and obtain really sharp images .   Posted: 12/05/2024 05:27:18

Gaetan, my app calls the flower a garlic vine, also known as an Amethyst vine (Mansoa alliacea). I agree with Murphy that there is a lack of sharpness (for example, look at the outside petal at 9 o'clock - either there are 2 petals one right behind the other with just a bit showing (both not sharp) or there was movement of the petal during the shot. I also agree that the black areas on the stem are distracting. Ray   Posted: 12/05/2024 21:25:48

Nice colors with the background. I also appreciate the composition and the water drops.
The "problem" is already raised, namely the lack of sharpness. Some people can take a picture at 1/60, I can't.   Posted: 12/19/2024 09:59:13