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I am working on a character and the mouth looks like this so far:
My problem: The upper and lower teeth booth go beyond the black part. My goal is to neaten the mouth up so that it has a linear form and no parts stick out into the brown part as the teeth do now.
My idea was to take the black shape, copy it in front and somehow to achieve that all parts outside the shape's form vanish. I just want to neat up the mouth. But I haven't found out how to do this. Any ideas?