Elza Clift, left, and Emilia Wilkerson participate in a mirroring exercise this morning as part of the Children’s Summer Theater Workshop. Thirty-six youths in grades 3-8 are working on basic theater techniques this week before writing and rehearsing a series of plays for the CSTW Showcase at 9:30 a.m. July 1 at the Bowlus Fine Arts Center. The showcase is open to the public. CSTW is sponsored by the Bowlus and the Sleeper Family Trust.