I haven't been totally unaware of it, but I'm afraid I also earlier haven't fully realized it either - the significant role of hands when creating expressions in illustrations. All this especially when drawing in cartoon style.
In my current project I've been illustrating a lot of characters, which need to be as vivid and characteristic as possible. One of the characters is wearing a woolly hat covering his eyes. As the eyes have an important role in creating expressions, I have now had to do it some other way. And that's when the hands come in.
Here is a set of hands I've sketched for those characters. Basically it seems to be the angles - on wrists and fingers - that need to be exaggerated.
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And now, seeing these hands cut apart from the bodies, they seem to be like loose sentences out of the original context. They seem to have lost their meaning.