The metallic ink in these pens is resistant to watercolor and spray inks. There are a variety of metal colors and pen tip sizes to choose from. Bernie recommends using watercolor paper for this technique. On one of the backgrounds, i used a medium point tip silver pen to draw asterisks. On the next one, a broad tip gold pen to create large polka dots. On the last one, a broad tip copper pen to draw squiggles.
I don't have liquid watercolors, so I sprayed blue ink over the surface.
Before drying, sprayed purple ink over the top and then let dry.
On the second one, I sprayed yellow ink over the surface, then added blue color wash with a brush to get the green splotches.