CostasV,
36mm is about an inch and a half. It is not exactly microscopic. You can do stuff like this if you have agate, time, and someone who will stick a sword in you if you don't do it. Look up Minoan art. The outfits look Minoan. The drawing style and the figures look Minoan. The Minoans generally did not depict violence. This is mainland Greece and Mycenean, and they probably were violent as all hell.
I find the action poses remarkable. Action poses were very difficult to conceive and draw prior to the invention of photography in the nineteenth century.
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JHG