fucking a blonde slave - increasing skills

029 has been making good progress thus far, but she is still lacking in sexual service. Today she is taught how to better her cock sucking skills, as well as service cock with her the rest of her body. We review her homework and progress, then jump into fucking her face. She is good, but we need her to be better. We want nothing but the best out of these sluts, and we won't stop until they achieve this or quit. She makes lots of progress during today's training, but I'm still not convinced that she has what it takes to graduate from trainee to slave.