I won a competition in Quick Cards Made Easy with a card very similar to this.
The background squares are hand drawn and coloured using pastel Pro Marker pens. The shapes are made using a variety of paper punches, I like to double layer them for a 3D effect and fluff them up a bit (but these seem to have gone a bit flat!).
The tiny gem and sequin embellishments used to decorate the punchies are nail embellishments from Poundland, just the right size for very small work.