This is the stencil I used - selecting just the two daisy shapes and the tall weeds.
I don't have a photo tutorial to go with this technique - just a verbal description.
I laid the stencil on watercolor paper and used watercolor pencils to scribble color into the blooms, leaves and stems where I wanted them to appear. I moved the stencil around to add more flowers.
Then I used an aquabrush to blend out the colors and then added more pencil where I wanted additional color, Including a light blue 'sky' behind the flowers. This was also blended with water.
I trimmed the panel to size and then used a pencil to sketch a border and blended this into the background.
I mounted this onto a base card to match the flowers and added a text sticker.
This technique actually makes it look like the illustration is hand-drawn. Very cool!