Set the following layer effects for these shapes:
blend mode = screen, bladk drop shadow with blend mode = overlay and size = 2-3px.
In new layer, select Pen tool and create a shape with silhouette of a frog. When ready, duplicate the layer (you will need 2 copies of silhouette). Hide one of duplicates.
Create layer mask (Layer menu - Layer mask - Hide all). Then, with large soft white brush, draw inside the mask to only reveal parts of frog silhouette touching the leaf.
Apply Gaussian Blur (with large radius, 10-30 px), and set layer opacity to 80%.
Voila! Here is how all our layers look together.
The last touch is: create new layer between frog silhouettes and leaf background, set layer blend mode to overlay, select very large white brush (300px or more) and put very big dot - it will be our light source. That's all!
Frog wallpaper (see wallpaper).
Author: Vlad Gerasimov