@Cobert:
That owl has a serious substance abuse problem.
The “problem” is that I don’t have enough beer and smokes.
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For the rest - each of the control markers uses simple geometric shapes. If you want to get a large picture with good resolution, I would recommend copying the avatar pictures to use as templates, then enlarging then editing the pictures to prevent pixellation.
There used to be some strategy sites I’d frequent, but their pictures weren’t all that much larger than the avvie, if at all.