The original painting was done with Pebeo, which is a enamel type resin paint.  I wasn't happy with it, so I used Watercolor Ground over the old painting.

Supplies

Daniel Smith Watercolor Ground in Black

Old Pebeo Painting

chalk for transfer

Daniel Smith Duochrome Watercolors

Winsor Newton Gouache (please note my are older and in different tube)

Turner Acrylic Gouache

Schmincke Aqua Masking Fluid

Daniel Smith Lunar Blue Watercolor

Golden High Flow White

Golden High Flow Buff

Tube Key from Sally's Beauty Supply

Watercolor Crayon

Alcohol Drops (alcohol from drugstore)

Nail or other tool to scratch into Ground

Kremer Gold Metallic Watercolor Paint

White Souffle Pen

Transparent Watercolor Ground by Daniel Smith

Behr House Paint