tickle the nose

GAH! In an effort to get me to utilize nasal resonance areas, my teacher has asked me to do series of exercises based upon and around singing "ning" with full closure to the mouth.

just today, we were warming up with various patterns using "ning" when he said that your nose should be buzzing off the wall and it should nearly hurt!

hm. so I'm trying to work with that as a guide to my search, because heretofore, I have felt nary a tickle in my nose until now when the front of my nose was going "holy god, scratch me because I am itchy with these vibrations.

may this serve as a note to self. now to continue.