I have been part of this for several years and it is great fun. Usually I use watercolour paper but this time around I used cereal boxes cut to size. Good firm card, I make my post card on one side and attach printed post card backs to the other side to address and send.
After the closing date Hanna sends an email with a list of addresses which may be anywhere at all. Very exciting.
I did something different this time, I used a collaged background and then placed my focal images over the top. I usually do painted backgrounds. I do hope the people who receive them enjoy them. Some acknowledge when they get them and some don't. It's always nice to hear if the mail arrives safely. It is not a direct exchange. Everybody's list is different.