You can enter anything you fancy, it doesn't have to just be cards, as long as it meets the challenge, and doesn't exceed the 15 total challenges entered rule!
Some inspiration from our fabulous DT
Using Sara's Signature Collection Love and Romance
A fairly clean and simple design - a valentine for my husband. The image is a very old one from Cuddly Buddly to which I added the sentiment and then coloured with promarkers. I took a section of the image and tiled it in Photoshop Elements to make a matching background paper.