Disappearing 9 Patch

As I work on hand stitching my first quilt, yes hand stitching, I am also working on a second quilt, a Disappearing 9 Patch. This is definitely a hard design to attempt as a second quilt but I'm not wanting to take the easy path and learning a lot as I move forward with my endeavor. I have 15, 9 patches done right now and once I have 30 I will start the next phase. Hopefully I will be dedicated in the next 10 days to work on my next patches. I spring snow storm, despite our currents temps in the 70's, would be greatly appreciated so that I am "stuck" in the house sewing!