Shame in a dream often centers on exposure -- a sense that something about you, if seen clearly, would make you unworthy in someone else's eyes. It tends to surface around a specific self-judgment rather than a general feeling, so the dream is usually worth tracing back to exactly what you fear being seen doing.
A Planet in an Angle doth more effectually produce his effects, but remiss in Cadent Houses. - William Lilly (1602.-1681.)