How to hold a Guitar?

Look carefully at the diagram add note:

(a) How the person is sitting-on the front of a chair without arm rests.

(b) How the guitar is kept vertical- not leaning back against the body.

(c) How the left-hand thumb is not sticking out hooked over the-neck-the thumb must be flat against the centre of the back of the neck.

(d) How the right-hand plays over the sound hole.

(e) How the guitar is supported on the thigh and balanced by the right arm just below the elbow.