Try to shoot in strong light. Shoot near windows, turn on all the lights, and consider setting up your own lights. A strong single light source creates deep shadows. A secondary, diffused light or a reflector fills the shadows. The nature of the light affects the attractiveness of your shots.
Diffused light prevents deep black shadows.
Reflectors and fill lights can do a great deal to illuminate the shadows. The built-in microphone is very convenient but has many inherent liabilities. Because it's far from the subject, it records background noise and the camcorder's motor, in addition to the sound you want. Whenever possible, use an extension microphone or a wireless mike, positioned near the subject. This gives you room so that when you edit scenes together, you have a little extra footage to adjust the pacing of your final production.