As promised, here is the tutorial for Sunday's accordion card. 1. Cut A3 300gsm white cardstock to 15" long by 5 3/4" high and make three creases parallel to the shortest side at 3 3/4", 7 1/2" and 11 1/4". Concertina fold and you will end up with the shape above. N.B. You should be able to get two from each A3 sheet of card, but you only need one for each accordion card you want to make. 2. Fold up the card, then using a Sizzix Bigz Vintage Cabinet die, place the folded cardstock so that…