This tutorial will break it down into several easy and manageable steps with lots of reference pictures to help you along.
Here are the materials that you will need:
Polymer clay (purple, red, white, green, blue, yellow, orange, black)
Step 1: Getting Started
Using a thin snake of red clay outline the design that will form the middle of the face. Once you are satisfied with the shape you can fill it in with red clay. Carefully smooth it out.
Step 2: Eyes
Fill the holes using yellow or orange clay to make the eyes. Add a small spot of green in the middle for the iris and a black spot inside of that for the pupil.
Step 3: Adding Details - Black Lines
Start with outlining the eyes with black clay.
Add the two yellow pieces to the top of the mask.
Outline the yellow pieces with black clay. Add 6 black strips to the top of each yellow piece.
Outline the red of the the mask with black clay
Step 4: Adding Details - Light Lines
Add the purple tinted detail lines above the eyes and to the sides of the face.
Add the red tinted line underneath the eyes in the red area. (mouth area.)
Step 5: Adding Details: Green Sides, Yellow Triangles
Using very thin pieces of clay, add three yellow triangle shapes above each eye.
Step 6: Add the Spikes and an Eyepin. and We Are Done!
Using a pointy clay tool add some small holes to the mask.
1 set of two between the eyes.
4 sets of two running down the mouth area
3 sets of two running down the forehead area
Add two yellow spikes to the top of the mask.
Add 4 spikes to each side of the mask. They should be ordered from top to bottom: yellow, red, green, blue.
Insert an eyepin into the top of the charm.
Bake according to your clay direction and add a glaze if desired.