Start by drawing the head, including the lower jaw. This time, our character will have a longish head rather than a round one.
Next, draw in the eye line, the body, and the neck. Once you have drawn in the length of the upper body, you can draw in the armchair behind. Even only partially drawn, the figure needs to look seated in the chair.
Now come the limbs, arms, and legs, positioned to adapt to the design of the chair you have chosen. But start off drawing the book: the distance between the reader and the book is going to determine the sitting position and the general posture of your character. The feet don’t necessarily need to touch the ground. The more the character looks small in relation to the chair, the more they will look young, or will have a kind of Alice in Wonderland vibe.
Now just add a few more details, and settle in for a good read!