Achieving the perfect eyebrow is a cinch with a step-by-step guide from M.A.C Cosmetics. In the tutorial video, M.A.C Senior Artist Gina Bettelli, shows us the proper techniques, tools and tricks to getting the perfect Power Eyebrow. I love thick defined eyebrows, which is on trend this season. I had the pleasure of having a M.A.C make-up artist at Macy’s at Metro Center create the perfect eyebrow for my face this past summer for an event.