It refers to a drawing which has a smooth surface and is a realistic representation of how a drawing should look.
For example, a human hand is not an isometric sketch of the fingers and thumb alone, but it is an isometric sketch of the fingers and thumb, plus the shoulder and the wrist.
Examples of isometric sketches:
Example of a realistic line drawing:
Example of a isometric sketch of an object (e.g., a flower), with a reference to a specific object:
Example of a 3-dimensional isometric drawing:
(Here, you’ll notice the hand is oriented at a 45 degree angle to the face, so it is isometric in 3 dimensions. This is not a “fake” hand!)
How do you make your sketch to “look better”?
The main thing you need to know is that the most important thing to do is your drawing on paper. If the paper is wet, it will not stand up to the strain. You need to take your time to sketch and get some familiarize yourself with the pencil tool.
I recommend using a small amount of water with watercolor chalk (or other soft chalk) to help make the paper “wet” and stick to the paper. After that, simply wipe dry the paper, then draw using the pencil tool.
If you have a pencil that will do it all, you can still make a realistic isometric sketch.
But what if you don’t have a pencil?
I can personally say that I don’t. But my advice is: Do your research well! I found that there’s a book published by the National Center of Anatomy of Medicine published by the American College of Bone & Mineral Research at the University of Virginia.
It can be hard to find, but it’s very informative.
For example, in the chapter “Isometric Sketch and Reference Materials”, they have this chapter in which they have some isometric sketches and reference materials.
The reference materials are just for reference because they do not actually show you how to draw the isometric sketch!
I’m going to just list some of the isometric sketch reference materials (I could probably add hundreds more) to help you:
In the “Isometric Sketch,” there is a section on lines, lines that are “bumpy” and such.
In the “Isometric Sketch,” there are some illustrations of the anatomy
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