Well, I signed up to the Craftsy free class, which looks really good thank you. They say you need 36 fat quarters, plus some other fabric.... I understand the importance of using 'decent' fabric rather than cheap stuff, but even the cheapest fat quarters I have found are £10 for 4...that's a lot of money!! I know I could probably buy stuff as I go along, but worry about not being able to get the same design/ colour if I didn't buy it all at once.
I think I might have to be a bit creative and a) not use fat quarters, but maybe see what I can find in terms of charity shop (thrift store) finds...