And here's my card:
I did a pretty loose interpretation of the sketch, but this seemed the only thing working for me, so I just went with it.
I used Faber-Castell Gelatos to color the flowers. I used various blues and a purple. I also fussy-cut them all out. I added a long hexagon stamp from Studio Calico, stamped with watercolors made with the Gelatos, and also added some watercolor/Gelato splatters. I also added some silver glitter to touch things up.
Cardstock: (white) Core'dinations
Clear Stamps: (flowers from Flower Garden set) Papertrey Ink, (sentiment) Technique Tuesday
Dye Ink: (Tuxedo Black) Tsukineko
Paint/Coloring Medium: (assorted Gelatos) Faber-Castell
Glitter: (silver) Martha Stewart Crafts