Somebody did me a favor and turned Ross's face so that it's looking straight forward like the sketch of Zodiac is. Here is the result(I am not crazy about the way the process 'fattened' Ross's face, it wasn't done on purpose, it was part of the process
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There is more than one way to lose your life to a killer
Those clothes on that sketch looks like someone in his 30's or 40's would wear and not a younger person. Then there is the eyewitness saying Zodiac was in that same age range.
Or were they part of his disguise? Glasses and some old yard sale clothes would throw many people off in the wrong direction if he usually wore trendy clothes and no glasses.