Well I have finished the work in progress today, although the photo doesn't really do it justice - it is almost impossible to catch the beautiful shine on it.
The box was painted with black Gesso, and then sponged with metallic acrylics in purple, copper and silver.
The flower was outlined with pale gold liner, and then filled with Pebeo Fantasy Prisme, violet, icy pink, and antique gold, Fantasy Moon in turquoise, and Vitrail Crimson; all dripped into each other and let them do their own thing.
Leaves were Prisme pearl green and leaf, the Pebeo Ceramic leaf green drawn through it with a cocktail stick.
The corner of the bottom of the box had Pebeo Empire Gold gilding wax rubbed on them, but the edge of the box and base were painted with gold Liquid Gold Leaf, as I wanted a more precise outline.
I am really pleased with the result.