A store-bought card may offer convenience, but a homemade one conveys real care. Decorating your own using watercolors is a great way to enhance any personal sentiment with an even more individual touch. The results are striking and unique, but they’re still lightweight enough to mail off with a single stamp or stick to a fridge. To show off your best work, you’ll need some good watercolor-compatible paper. We’ve found five solid options of various sizes, with textures appropriate for the medium.