Here is a leaf with few water drops over its surface. But there is a catch, those water droplets are fake. It means they have been made after the picture of the leaf was clicked. I have made those water droplets in Adobe photoshop by playing around with some of the properties like inner shadow, drop shadow and of-course the liquify tool from filter option. I can hope that it looks natural to you guys as well.
Here is the unedited version of this image without water droplets.
keep making good artworks.......