I made this picture below, and wanted to teach you how to!

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Step 1: Prepare the paper/digital art size. I recommend a square, but anything can work!

Step 2: Draw the base lines. Just draw 2 lines that meet in a 90 degree angle  and then add a few lines. The more lines you add on each axis, the more circular your lines will turn out. In just doing 6 as a quick sample, but you can do as many as you want!

Remember to keep the lines evenly spread!

Step 3: Add numbers. If you are a beginner, I would recommend color coding the numbers. To see where to place the numbers, just look at the image below.

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Step 4: Draw your lines. If you do this digitally like I did, it may be hard to line the ruler up, so you have to be patient then. And you HAVE to use a ruler! It won't turn out well if you don't!

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Then just erase the excess and we're done! :D

Here's how mine turned out! What do you think of yours?