Refer 5 friends to sign up for the Annual Gift Certificate in "Art Teaches That" When they sign up have them write in Paypal Notes your name and a gift coupon will be sent to you by return email. It's That Easy.  Below is an email you can cut and paste into an email to your friend.  
I just subscribed for Gift Certificate for name of child in  "Art Teaches That".  It's a video series teaching drawing created by and produced by Professional Artist Deborah Chapin for kids 8 years and older .  Lessons are only $15 each paid annually, she also has monthly subscribers  Check it out