PrintAll over colour application and blending: use the flat angle to pick up colour and tap out excess on top of your hand
Face the brush downward so the flat edge glides along the lid, depositing colour
Contour application: use the flat angle to pick up the contour colour and tap out the excess on the hand
Rotate the brush upside down so the flat edge is facing up and apply colour to the crease using a "windshield wiper" motion