Lava
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Spending over three years working on this alone without receiving even a small review with recommendations in return.
Ha-ha
I've been doing this since at least 2010, and even earlier. I don't remember when this idea came to me.
But I started with "square" maps. After a few years, I realized that "corners" were unnecessary, and I started drawing spirals. Almost all my knowledge comes from those clumsy attempts I made 10 years ago and earlier.