Art mentor

As an experienced painter, I am looking for an art mentor to help me hone my skills. Specifically, I need mentoring in painting techniques. I’m looking for a combination of theoretical lessons and practical demonstrations so that I can gain the most from the experience. My current skill level in painting is advanced, however I am always willing to learn new techniques and open to constructive criticism. The mentor I am looking for must have an understanding of painting techniques as well as be able to help me develop my painting skills at an advanced level.