step 1 of 2
Then adjust the level until you get the desired amount of black and white on the picture.
From there, make it as a layer mask and mask everything except one of the petal.
Flatten the image and make a copy of it again.
Then use smart blur on max setting and unsharp image on normal setting, you'll get a stronger colour.
Apply gaussian blur a little bit to give the smooth feeling.
Flatten it again and make another copy.
Apply gaussian blur again to create the depth.
Make it as a layer mask and mask everything using the radial gradient tool. You'll get a center-focused depth.
-end-

- : source
step 2 of 2
Final result


