Leopard Drinking Water

Water drop on a wall

This one was pretty challenging. I am going to give one more try to this one.
I would welcome any suggestions for improvement.

My first 3D Sketch

This is, as you can see, a 3 dimensional sketch of trees and birds and a pencil. The shadows were tricky to make since you have to have knowledge of  how shadows fall and how they would look when light falls on the object particularly at that angle. The pencil was an added feature, so that it would give the sketch a more realistic feel. 3D sketches are simple to make once you get the idea behind how you want it to be, and from which angle you want it to be. In this sketch, the source of light is from the top-left corner so the shadows are formed directed towards the lower-right corner. When you understand how you need to make the shadows, you are halfway there in order to make your own 3D sketch!!