Oh nice work, you're right, it does look good. I hadn't really thought of layering different versions, but I see what you mean about the slight deviations making a very definite effect.
This is a pretty simplistic filter, basically a high-pass filter that only allows lines of a certain length or above to pass through, so there's no sophistication. That results in things like Optimus' right eye collapsing a bit, I guess because the points at the far end of the loop of the eye have not been rendered. I would love to have the filters work with a bit more sophistication, but I'm also very aware that there's other apps out there that will be able to to artwork prep much better than I ever can, so I'm not going to spend too much time on that kind of thing.
Keep us updated with your results, thanks!
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