These cards are from the Painted Wishes kit. It is one of the all inclusive kits that does not have any stamping. These are quick to put together but look beautiful.
You can order this kit or any of the others HERE
And you can find the video demonstration HERE
No card dimensions for you this time since this was a kit. If floral is not your cup of tea, Stampin' Up has many other kits and new ones coming out each month. Here's a few other examples: