Original Greeting Card

I am taking some time off from my ceramic class this fall, which is pretty hard for me because I love it. Now my hobby is making greeting cards. Cards can be really pricy and I'd rather want it to be somehow original. I have a mini water color kit with basic 5 colors of brown, yellow, blue, green and red. Surprisingly, these four colors can create a good variety. It's fun and nice to write a note on my original cards.