Namito111 made a very good watercolor effect using blender3d render nodes. I download the blend file and modify it a bit to render a watercolor style tree.
The nodes setup is very easy to understand. Basically, it is divided into 3 main section:
– texture displace/distort the render
– texture with “screen” blend mode to simulate color wash/fade
– blur render and “divide” blend mode to simulate watercolor wet edge
I added in a “magic” texture to add in color variation.
Download Sample Blend at Namito DeviantArt: