I'm all for learning new techniques but at the same time, we all have different bodies and what works for one person might not work for another. I am completely self taught and get a lot of compliments on my tone and technique. My right hand moves around depending on the song and the type of sound I want. Explore other techniques, find what works best for you and stick with it.
"If you don't want the truth don't ask. Make up your own like everyone else does". (Michael Pare as Eddie Wilson/Joe West in Eddie and The Cruisers II).