how to create a full model of automotive using sketch trace?

i tried creating a full model of Audi R8 using a tutorial but i cannot understand how the curves were created. if some one can help me with complete tutorial i can learn. http://www.youtube.com/watch?v=LSBvrjlsPp8 , this is the tutorial link. looking forward for the response. also i have attached a pdf tutorial for it.

Answer
 
Comments 0