The true test of good technical drawing is being able to handle multiple vanishing points and levels of ground at the same time. So rather than just creating a scene on the same uniform plane, you add additional height and width with complex levels.
If you want to challenge your technical drawing prowress and improve your overall drawing skils, watch this tutorial to learn hwo to draw a complex levels scene of an upward sloping series of buildings topped with architectural sculptings and surround by walkways.
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