Rouge, blush or blusher is cheek coloring used to bring out the color in the cheeks and make the cheekbones appear more defined. Rouge comes in powder, cream, and liquid forms.
Contour powder/creams are used to define the face. They can be used
to give the illusion of a slimmer face or to modify a person’s face
shape in other desired ways. Usually a few shades darker than one's own
skin tone and matte in finish, contour products create the illusion of
depth. A darker toned foundation/Concealer can be used instead of
contour Products for a more natural look.
The picture tutorial below shows you exactly where to apply he blush
based on your Face shape. Follow the instruction carefully and you will
have the perfect blush.