You need a toe nail clipping, a finger nail clipping, a drop of your saliva, 5 strands of your clean hair, a Lycanthropous flower and a full moon.
Sitting under a full moon, whilst chanting:
"A wolf's true from for all to see
Guided by spirits, I turn to thee
Give me the power of eternal night
So I may wander under moonlight"
Put all your ingredients together, and crush them in a clear small glass. Must be clear, no ridges, no pictures, just a clear glass. Then after chanting for 5 times round, you should feel a surge of energy run through you. When you get this, stop and you should be ready for the next full moon to change. You will experience some side effects - headaches, aching muscles - it's all normal.