After viewing Tiki_Friki's thread "Postcard Made for Anonymous Mailing", I was inspired to look on
www.postcardx.net and make a postcard.
http://homepage.ntlworld.com/tim.bickley/lou/postcard.jpgA random click brought up a girl who likes butterflies and hearts, which I knew I had plenty of hehe. It was a pain getting the butterfly to stick so it's wings were raised as if it had just landed (it doesn't show up so well in the picture), but a pin in it's back while the glue was drying seemed to do the trick. The colours and glitter don't look so great in the picture, but I thought the green and red worked quite well together.
I'm gonna send it in an envelope so hopefully it won't get damaged in the post.