I did this one in a class last year. It's quilt-as-you-go method. Each block is sewn and includes the batting and backing. Then the blocks are joined together with narrow sashing to butt the blocks together. Borders are keyhole strips, each one sewn onto a strip of batting and backing then joined to the quilt the same way the blocks were joined together.
crazy quilt
[ATTACH=CONFIG]190301[/ATTACH]