Drawings on paper Thinking is taking a line for a walkfelt tip pen on paper 202270 x 100 cm. Thinking is taking a line for a walkfelt tip pen on paper 202270 x 100 cm. Thinking is taking a line for a walkfelt tip pen on paper 202270 x 100 cm. Thinking is taking a line for a walkfelt tip pen on paper 202270 x 100 cm.