These tulips were painted with layers of miskit protecting the already painted shapes that weren't to get any darker. After each application of miskit dried, color was poured over the wet paper, then allowed to dry, too... more miskit, then more poured paint - with a total of seven layers of poured paint over seven different applications of miskit. No paint brush loaded with paint ever touched the paper, except for signing it.
The batiks and taping techniques on this blog were created with the same process, but with different materials to protect the lighter values. Instead of miskit, masking tape can be torn to cover shapes on the watercolor paper, or hot wax can be painted on washi papers to protect shapes before adding darker values of colors. Whatever's used to protect existing values helps keep the lighter values light and untouched, while the darker values are built up, usually resulting in fresher looking watercolors.
It's a great way to teach the importance of value changes to artists. Color does seem to get all the credit for a good painting, but VALUE really does do all the work - defining shapes, distance, forms, etc.
"PINK PARADE" Transparent Watercolor on 140#HP Arches 21 x 14"