That's a good blush/contouring technique: the C shape! It's supposedly trendy on the runway now to apply blush in a C-shape but high on the cheekbones and on the temple. I've seen blush applied actually on the eye area.
To help determine your face shape, pull back your hair and look straight into a mirror. Use a marker or even lipstick to trace a line along the edge of your face. Try to stay very still or rest your face lightly on your fist to steady yourself. Now step back. This really helped me to know my face shape. That, or you could just post a pic.
A quick trick is to line your lower waterline with a creamy white pencil. It widens the eyes very well. NYX cream shadowstick in Milk is a good one. But it is very soft, so apply lightly.