Line Drawing in sumi-e 
Line Drawing: This is just sketch in sumi ink.

Buddha Meditation: The key three lines are, 1)shoulder outline, 2)inside line to abdomen, 3)salnted down line from abdomen.
The three lines cross at the key point called "tan-den" where the "ki" power is focused, 9 cm under the navel. Focusing "Ki" at the tan-den point is applied for all martial arts or breathing method like yoga. (7 minutes)

Sumi-e Tiger:  Eyes, nose, and ear are the key points.