Since I was already asked for few times if I have used Photoshop to adapt the image, I will explain how I did it.
I took a pot that has dark grey inside color and put a white paper in the background.
This is how I achieved that the water has this “grey” color.
The focus was done manually and flash was used. The rose petals were “just swimming” on the water.

Photoshop I only used to resize the images.

So, there you go, simple as it is :) Happy shooting!
Sabina