You will receive the entire background piece with Block 1. Why? So your background will all be from the same dye lot and so you can cut it to “match”. Obviously there will be seams and while most of them will be covered up, larger splotches of lighter or darker wool will correspond. So as you cut your project, keep track of which block is which and what end is up. PS. Post-it notes do not stick well enough to do this job–just sayin’.

The sizes are listed on the top of your Wool List:

But if it helps, here is a grid drawn out:

Square up the top and side of your wool piece being careful to leave at least 42×30 for the blocks (you should have plenty). Then it is up to you if you wish to cut rows first or columns.

Once the pieces are cut, baste the lines of the Danger Zones. Many pieces of wool end up on top of the seams.  It is easier to sew the embellishment stitches BEFORE sewing the blocks together, so we will complete all of the parts that do not cross seams before sewing.
To make this process easier/safer, trim each block to the exact size, then sew a basting stitch line along the edges that will be seamed with other backgrounds ¾ inch from the edge.  I used a green sewing thread that matched the background.  I call this space the “danger zone”.  Don’t applique or embellish anything in the danger zone until the backgrounds have been sewn together as instructed.  You can applique/embellish the part of the shape that is in the safe section, then just pin it to the danger zone.