To paint a leaf in watercolor, follow these steps ^{1 2}:

1. Using the tip of a brush pen, draw triangle shapes in a wavy pattern.
2. Dip your paintbrush in water and then paint over the triangles, dragging the water with the tip of your brush to form a leaf shape.
3. Repeat this with other colors.
4. Let the leaves dry a bit and then add another layer on top to create a fuller effect.
5. Start with the lightest color first and drop in other colors while the paint is wet.
6. Make the paint pool around the edges to create darker edges for a more realistic look.