We tested the card at the regular Monday Tiree Tapestry Group meeting suggested improvements were

people noticed and liked that the cards were all different (due to the hand-stamped image on the front)
people liked the 'every word counts' statement
if might be difficult to limit it to just 5 words
the logo was difficult to read - but people liked that
extra background information about the project would be welcomed to 'authenticate' the project
more of an explanation about how we plan to use the words would be good
what will happen to 'negative words'?