Artist Tim Bavington has learned two things in three years of teaching at UNLV. First, “I’m surprised by how much I love it,” he admits. Especially because “I spent 25 years studiously avoiding teaching.” The second thing he learned: how much he enjoys painting watercolors. “I was teaching it, and it occurred to me, ‘Why don’t I do this?’ ” Bavington says. So he did. The result: “Sounds of Silence,” an exhibit of new watercolors at MCQ Fine Art through Jan. 5. Only Bavin