1. Prepare watercolor paper, water, Montmartre watercolor powder, paintbrush, and wool brush. Make a line draft first, just use a pencil to draw lightly and shallowly. If the drawing is too heavy, use an eraser to make it lighter so that you can see the traces clearly.
2. After the line drawing is done, use white glue to draw rain, wheel highlights, green plants, and flowers. The lines of the rain should be thinner, and be careful when applying the white glue.
3. Draw fences, bicycles and flowers. Pay attention to the relationship between light and dark.
4. Finally, just copy it with a pencil.