Tehwan Tso was born into an artist family in Taiwan, where her father was a professor of fine art and an artist who specialized in oil portraits. Tehwan studied Chinese brush painting under an artist in Taiwan until she moved to New York at the age of 15. Painting became her favorite hobby and secondary occupation during her school years, technical career and home schooling years.
Tehwan has taught art classes at The Art Place in Marietta, The Art Station in Kennesaw, Kennesaw State University Continuing Education, Cherokee Arts Council, Callaway Gardens, You Gotta Have Art, First Baptist Church Woodstock, Johnson Ferry Baptist Church, Atlanta Chinese School, Cobb County Artists in School Program, and The School Art Program in Fulton County. A promotional program for Cobb County Art Centers featured Tehwan on TV23 community television channel. A full-page article in the Marietta Journal also featured her art work and instructional classes.
Tehwan has demonstrated floral brush painting in the Southeastern Flower Show at the World Congress Center. She has also had solo exhibitions at East Cobb Senior Center, Callaway Gardens Discovery Center, Kennesaw State University Confucius Center, The Art Station, Glimpses of His Glory Gallery, and Central United Congregational Church.