With the 3rd degree certification, become a certified Reiki Master and Instructor Usui Shiki Ryoho method. 

At this level you will:
Learn the sacred practice of attunements and using the Master Symbol  
Learn to develop Reiki manuals and curriculum for  student instruction 
Receive instruction on professional client and instructor etiquette
Gain access to the Heart Sutra as a tool for navigating your healing practice