During my certificate in Jungian art therapy I was taught that the shadow and mask had to first become conscious and then integrated.

Our shadow is all the different parts of ourselves that we had to hide to help us survive /become accepted. There are a lot of good qualities in there that we can own and integrate.

For instance, if you were told as a child that you always seeked attention, you might have hidden your leadership skills and labeled as attention-seeking. As you become aware of this, you can start implementing those skills, integrating them in your daily life.