It’s a Japanese batik style painting created with hot wax.
Here I explain you the process of the artwork that took me 5 hours to make on a cold and rainy day:
On a piece of white cotton you draw/paint an image with hot wax. The wax is much more difficult to paint with than a regular paint. The brushes are pretty big and therefore much more difficult to paint fine lines.
Most parts of the painting have to be painted with wax twice, in order to create really white spots.
On the left picture it shows my artwork on the cotton: a geisha with cherry blossoms in the background and below her a pond with lotuses.
Next, the white cotton is dyed with indigo (the traditional pigment coming from the indigofera tinctoria plant) for about 10 minutes while you slowly stir the fabric.
Because of the wax that has penetrated the cotton thoroughly, those parts do not catch any indigo paint.