The Zoso and Jim mazes are the most interesting. If you zoom in once, they produce a neat optical illusion. The man and pirate drawings don't really produce the same effect. If you decide to make more, follow the style of the Jim maze.
I think it would be better if they actually were mazes. At the moment they're just random lines making up an image, and if that is the case you could just use horizontal and verticle lines to get the proper 'colours' rather than adding the confusing random lines. Those are my thoughts.
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Awesome!