I alway tell peeps, First practice a twist on and off with tap of rear break over and over and learn to speed shift, do this on flat ground. This will train the brain to stop a flipover and keep your wheelie up.
Then practice wheelies up hill like over passes and such.
This allows you to reach your fulcrum (sp) point without the front end feeling as high as on flat graound. It provides comfort. Be safe and good luck.