On the Art Techniques group I have taken part in an ATC swap with the theme 'Quotes'; I chose to use one of the Humorous Seniors stamps by I Brake for Stamps and a quote by Bob Hope.
I have also made ATCs for a swap on CCSwaps, this time with the theme 'Nature'. The background is done using the watercolour / rock salt technique in yellow and green. Once dried I applied a thin layer of watered down gesso to mute the bright colours and then stamped leaves etc in a variety of colours. The stamps used are from the Hearts in Touch Botanicals sheet.