Thanks for your nice comment in your Monday 02 December 2013, 20:59 pm post. I like that you're placing importance on proper posture for classical guitar, especially when it comes to positioning of the right hand. I'm also trying to do the same, though it still feels awkward to me to play guitar with correct posture. Playing relaxed and keeping a straight line from my forearm to the back of my right-hand (with a slight bend at the wrist towards the guitar) is something I constantly have to remind myself to maintain, though I know I slip now and and then.
I see from your Lesson 01 videos that you're doing a great job playing in a straight and relaxed posture. The positioning of your right hand looks perfect, as does the positioning of your left hand on the fretboard. You also maintain a smooth and even tempo, which I'm guessing comes from your experience playing the drum set shown behind you. Great job on adding titles to your videos too.
In addition to the Shearer's Method 1 book that you mentioned, I also use "Solo Guitar Playing: Book One" by Frederick Noad. Although both books do a good job explaining proper posture and hand positioning, the best book I've found so far on the technical aspects (posture, hand positioning, nail filing, note articulation, etc.) of classical guitar is "The Art of Classical Guitar Playing" by Charles Duncan. I read that book often in hopes of making the information in the book stick in my memory.
Regarding using a mirror for checking posture, I use both a full-length mirror and a hand-held. Before I start my guitar practice I sit in guitar playing position in front of a full-length mirror. I then adjust my playing position as needed and do my best to remember how everything feels. Then I move to my regular practice location and do my best from memory to sit using correct guitar playing position. I use the hand-held mirror on occasion to check my right-hand position on the guitar. I also critique my playing position when I review different takes of practice sessions that I record on video.
Finally, I also make mental notes of posture and hand positions used by professional classical guitarists whom I watch on youtube, like this site's owner Jean-Francois Delcamp. I especially like the posture and hand positions used by Tatyana Rhyzkova and Kaori Muraji.
[Added below an hour or so later]
A few minutes ago I noticed that you have a website link and I visited your site. Now I understand why you're such an advanced "beginner" classical guitar student!
I'll be certain to put into practice any guitar tips that you suggest for me.
Great looking and nicely equipped music studio you have.
Last edited by Ray Santos on Thu Dec 05, 2013 4:36 am, edited 2 times in total.