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The following extracts are taken from The Big Book of Cartooning written by Bruce Blitz. There are many different types of speech bubbles (or balloon) and some evoked emotion. What you see are just some common examples and you can redesign the shape of your speech bubbles provided the readers understand what you trying to convey. Remember the readers can't hear (physical sound) what your characters are talking and the only clue that reflects the charcter's emotion or state of mind is the...