Hi Ramona. I'm not going to be a huge help here. How Jackie (PJ) picks her fabrics is that she goes to her stash of fabrics which she has collected over the years and picks out fabrics that would best work together. So, she doesn't end up with exact fabrics that she can recommend.
I can tell you that she recommend 9 fat quarters for the main front fabrics (plus three for the borders of one fabric color). If I were shopping for a similar look, I would print pages 4-6 of the instructions, which shows swatches of the fabric and take them to the store with me to help in my shopping choices. If I couldn't find an exact fabric, I would look at the overall look of the fabrics together and decide what might be a good substitute.
Sincerely,
~Heather
Ramona B.
What fabric was used for the Qui-zzle? It is perfect