Art Class for 6yo near El Cerrito

Hello! I have a six-year old daughter that loves to draw and paint and is very good at it. We'd love to find her an afterschool or weekend art classes that teaches fundamental drawing skills. We'd like something that focuses on skill development - use of line, shape, color, etc. - as opposed to a more craft project approach. Most of the recommendations in the archives are quite old so am looking for current experience. We are in El Cerrito but willing to travel a bit for a good class. Thanks!