People frequently tell Mary Lynn O'Shea how creative she is. To which she replies with a smile, When you work hard at something every day for 30 years, you get pretty good at it. While O'Shea believes she may have been born with an intuitive sense of color, she acknowledges that the rest has been an incredible amount of work. Indeed, she has dedicated her life to art. In her 20s, she taught art at the college level. In her 30s, she made intricate tapestries that were sold in art galleries…