Answer:
Zoom. Without a doubt, zooming is the most used (and therefore, most overused).
Pan. Panning is when you move your camera horizontally; either left to right or right to left, while its base is fixated on a certain point.
And tilt.
Trees, shadows, detailed ground
Answer:
You can also use a colorless blending pencil to help blend colors without adding any further pigment. To do this, lay down a fine layer of colorless blender first and then add your lightest color. Dark colors can be difficult to blend once they stick to the paper fibers, so this base helps alleviate that issue. Smudging With Paper and Tortillons
Drawing huge architectural structures