The purpose of this exercise is to take all the information gained to this point and give it a practical application - the designing of your own character.
All the principles given to you will be applied to this assignment so lets review them all again fully.
Remember to draw from the inside out, beginning with the sphere. A house built without a solid foundation will collapse in upon itself. The same thing will happen to your character. (It just wont be as dramatic looking.)
Understanding the underlying anatomy of your character is based on the principles of human anatomy. Get this down as quickly as possible.
Maintaining the proportions of your character is very important. Every feature of your character has its own proportion that must be maintained, otherwise your character will go off model.
Volume / Mass
Are both tied into the characters proportions. You can stretch and squash the character but dont loose the overall mass.