Sketch the basic shape of the mouth area
Draw the upper and lower lip lines
Mark the center line between the teeth
Lightly outline the tooth row as a curved band
Divide the band into individual tooth shapes
Keep front teeth larger and back teeth smaller
Add slight variation in tooth size and angle
Draw the gum line above the teeth
Refine the edges of each tooth
Add gaps and overlaps where needed
Erase construction lines
Shade the teeth lightly
Darken the spaces between teeth
Add shadows under the upper lip and along the gum line
Add highlights on the tooth surfaces
Clean up the final outline