When playing the guitar, the thumb should be positioned behind the fingers, not in front or to the side, to maintain proper pressure and control.

Independent training for the thumb and fingers is essential, enabling each to function without affecting the other, which is vital for playing beautifully and accurately. To make a melody sing, you need to control each finger individually and develop a relationship between them, allowing for independence and trust in your playing.

When you pick something up or tap on a table, you naturally use a relaxed and efficient hand position, which should be mirrored in guitar playing.

To achieve a relaxed hand position, I minimize unnecessary movement, allowing only my fingers to move while my hands remain still on the guitar.

Always brace your thumb against the sixth string or the string you plan to play next for better stability and control. When playing on the sixth string, I place the back of my thumb on the guitar to maintain control.

The guitar technique is fundamentally based on common sense, similar to everyday actions like tapping on a table.

I've noticed that many guitarists, even professionals, have a tendency to play with their fingers extending outwards, which is not ideal for technique.

To maintain a full range of motion while playing barre chords, position your thumb against your middle finger and rotate outwards instead of pressing your thumb and index finger together.

The first mistake is improper right hand alternation; as classical guitarists, we should regularly alternate fingers to avoid tension and improve speed, fluidity, and accuracy.