I found another great challenge blog via AAA cards blog and via Victoria's new blog that collects and lists all challenges, great job on looking4challenges.
So first time finding and entering CAS colours & sketches.
I've made a square base from A4 size cardstock.
made a panel slighlty smaller and diecut 3 squares out of it, positioned like the sketch.
I've traced the position onto the cardbase and sponged some Distress inks in those squares, to colour the backdrop.
I've stamped part of the sentiment from Lawn Fawn's gleeful gardens on the top panel and also the images with Memento black ink and coloured them with my Spectrum Noir alcohol markers, then die cut them and placed them inside the raised panel.
Hope you like it, I do..;-)
For more info on the CAS Colours & Sketches, see this