My modifications to the template went smoothly, and they didn't seem to add to the difficulty at all:
You can see that I drew in the 1/4 inch shadow on all the templates. I used 1/8 seam allowances on all the internal seams, which turned out to be no problem at all. Even though the darker orange pieces would finish small, I still cut the fabric 1 1/2 inch wide so I would have somewhere to put the pins. You can see that I have also been staystitching the side seams, which gives me one less thing to worry about with the assembly.
The assembly of the sub-units is definitely the biggest challenge:
By the end of the day I had sewn together seven, and I had to redo a seam twice. Because joining the units is the trickiest part, I am forcing myself to add each unit to the whole as I go. That way I will not be stuck with the worst part at the end.
You probably realize that I have skipped over Month 3. I am looking forward to going back to it, because I think it will be a doddle compared to Month 4! It is fun to see how the designer Sarah Vedeler is increasing the challenge each month. We will all be Mariner's Compass masters after this!
Overall, I am very happy with how it is going. It is becoming clear that once again The Quilt Show BOM is going to be impressive. When you see how all the details keep building month after month, it becomes a very satisfying thing. Onwards and upwards!