Should sideburns be even? No! They should APPEAR to be even, says Clipper Guy Ivan Zoot during his "This is NOT Your Grandpa's Baber Shop" presentation at Premiere Orlando 2013. See this quick video where he shows you how to create the perfect sideburn and how to properly clean/cut around the ear.
"It's very rare to find someone that's truly bilaterally symmetrical," says Zoot. "The same goes with sideburns. Do you know who the only bilaterally symmetrical person is? Denzel Washington! Believe it or not his features are even on both the left and right sides of his head. But, with most clients they are slightly uneven. When this happens, always use the shorter sideburn as a guide. Here, I am going to show you the proper technique you should follow when creating clean sideburns on your clients."