Similarity-5

Image illustrating the law of continuity ( Similarity)

Depth-4

Illustration of the depth cue:

this painting gives a strong feeling of depth. we can notice the big distance between the first barquier ant the third one.

Point, Line, Plane-3

An image relying on vertical lines.

Color-2

The Moroccan Zellige is a wonderful mix of colors, here in this picture we can notice the complementarity of color: between the blue - yellow, and also  the red - green.  

Lighting-1

I chose this image to represent what lighting is for me. at the first look we may think that the light comes from  the bulb, when in reality it comes from the sunset or the sunrise. the beauty of this image comes from the mix between the natural and unnatural source of lighting.