I have been looking at some of these cards on a forum and really like them so had a "bash" myself.
I was going to leave it all white but decided to add a bit of blue chalk. The card was a 3 fold apperture card I've had for a long time from when I did cross-stitch cards, so I just cut the oval out on the "flap" bit that folds in. This saved me making a backing card. The flowers are a mixture of punched and crealies. Hope you like it.