Outgoing: Reading woman

A while back I have found this stack of magazines from the thirties. In one of them was a pagesize picture of a painting of a reading woman. I know that Margit collects pictures and stamps of reading women and asked if she would like to have the magazine. And she did! I had to find a big envelope tot fit the magazine in since it is almost A3 size. The envelope was looking so plain though, that I made a drawing on it. On the back I stamped my nursing stamp in matching green. I find it hard to send just a plain envelope! How do you decorate your envelopes?