Do you use a primer? A primer helps to even out the skin tone, and also makes make-up last longer. Follow with a cream based concealer, apply with your finger and then apply the foundation. You can also follow with a translucent powder to make your make-up last longer.
Tricks on brightening up the face:
Use a white shimmer eye shadow on the inside corner of the eye. this opens up the eyes. A few coats of mascara widen the eyes and make them look more awake. Pink blush on the cheeks brings some colour to the face.
Hope this helps!