Hi, reporting in ...just completed two unit from Step 2. The first one I did some un-sewing, I was making the whole unit at one time. Light bulb time, the second one, I maked two 9- patch units and then joined to make the 18-1/2" x 9-1/2" unit. My half square triangles lined up sooooo much better..no un-sewing.
I just wanted to share this if someone else could benefit from the information.
Judy in Phx, AZ