How to Draw the Colosseum

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Step 1. Before anything else, you need to find some photo reference. The worst thing you could do is try to draw such a recognizable structure without the proper reference material. Even those who aren't experts will know if you just winged it. The first step here is to lay down a verticle line in the center of the page. This is mainly a guide line. Next, draw two upward lines on either side of the image area. These are the base for the walls of the Colosseum. From the perspective of someone standing on the ground looking up, the outer walls are not perfectly verticle. Rather, they tilt inward and grow narrower toward the top.

Step 2. The shape overall shape of the Colosseum is that of a cylinder. Check your reference. What you want to do here is lay down some curved lines that represent each level of the structure. On a blueprint, these would be straight, horizontal lines. In perspective, though, the lines become curved. Think of it like string wrapped around a paint can.