The next day I added a little tangling with Printemps onto the background with a black Sharpie pen (I was afraid I'd clog up my micron). It's a subtle touch that I'm very happy with.
Next I added some depth and color variation with my Cretacolour Aqua monolith woodless pencils (dry). The final layering was adding the piece to an A2 card base and trimming off the edges. The finished card is shown in the first photograph.
Inspiration for this piece was thanks to a beautiful card on black found here by Heather Telford.