Improving Daffodil Watercolor Painting

This is a picture that we created at AC Moore's watercolor class during 2 hour period. It is good and you can leave it like this but also you can go farther and add some more details. Below I'll show what I've done with it later at home. I hope it will help you to improve your paintings. 

I decided to darken the background and make it richer. You can see that I sketched leaves and a flower bud at the top left corner. With such helpful pencil marks I was ready to start to paint around. I used in turns Phalo blue, yellow ochre and sap green colors.

When the paint dried off I added some more leaves with positive painting this time. I used deep green and darkened it with Phalo blue. 

Next step - shadows.

Here is a finished version. Darker shadows made this picture more three dimensional. To create my gray for the shadow I used a mixture of Ultramarine blue and Burnt Umber. You can also use Paynes gray.