1. How to Contour if You Have a round Face Shape

Source: The Right Way to Contour

A round-shaped face is discernible by the distinct lack of points and angles. It is usually as long as it is wide.

2. How to Contour if You Have a Heart Face Shape

Source: The Right Way to Contour

In a heart shaped face the cheeks are wider than the hairline and the chin is narrow and pointed. If you have a widow's peak it really distinguishes a heart-shaped face.

3. How to Contour if You Have an Oval Face Shape

Source: The Right Way to Contour

The features of an oval-shaped face are that it is 1.5 times longer than it is wide and there are no major points along the hair, chin and jaw lines. You might think of it as an upside down egg.

4. How to Contour if You Have a Diamond Face Shape

Source: The Right Way to Contour

You have a diamond shaped face if your face is longer than it is wide, you have a slightly pointed chin and your hairline is narrow than your cheeks.

5. How to Contour if You Have a Rectangle Face Shape

Source: The Right Way to Contour

You can consider that you have a rectangular-shaped face if your face is longer than it is wide and that the width of your jawline and hairline are close to equal.

6. How to Contour if You Have an OBLONG Face Shape

Source: The Right Way to Contour
Although sometimes people use oblong and rectangular to mean the same thing, an oblong-shaped face is not the same as a rectangular-shaped face. Like the rectangular face, an oblong-shaped face is almost as twice as long as it is wide but there are no major points or angles along the hair chin and jaw lines.

7. HOW to CONTOUR if YOU HAVE a SQUARE FACE SHAPE

Like the round-shaped face, a square-shaped face is as wide as it is long, with an even-lengthed hair and jawline but it differs in that there are angles.

If you are unsure of your face shape, there are lots of tutorials on the web, Just search to find one - they go from simple diagrams to extensive tutorials - like this one wikihow.com