I have always enjoyed sunflowers. They have so much character.
Above you see I have lightly scrubbed the outer edge of the butterfly's wing to allow it to blend more with the background. I have also lightened the area along the top of the butterfly's wing and the tip to give the impression of light.
Links and resources:
The watercolor study, "American Lady and Sunflower", is available for purchase in my online shop.
Sunflowers (Helianthus annuus) information
About the American Lady at Butterflies and Moths of North America
Scrubbing in watercolor
Posts with paintings of butterflies and flowers, the most recent post will be first.