I love using the Mini Treat Bag Thinlits Die to create vellum envelopes. Then you can insert one sheet cards made with pretty Designer Series Paper allowing the pretty colors of the paper to show through the vellum. Here's one I created using a sheet of paper from the All Abloom Designer Series Paper Stack.
On the back of the card, I stamped an image from Bordering Blooms in Mossy Meadow ink. Then, I colored in the flowers using Pistachio Pudding, Strawberry Slush, Pink Pirouette and Hello Honey inks and Blender Pens.
A fun alternative to a regular card and so easy to do!