I've only done 2, did it because I fell in love with the fabrics, it's the Patchwork Party, 12 different shops feature a block, each shop finishes their quilt differently so you can choose one of their ideas or do your own. Marti Mitchell designs the blocks and she sells templates or the patterns have a paper template printed on them. with the templates you can makes LOTS of different blocks, all the triangles fit perfectly!