Step 6, 7, 8 & 9: cut down the shirt to match the pattern, cut and attach princess panels (test run)

This is actually going to be easy, now that I have a pattern, assuming I've done my pattern work properly.

But I won't know until I've tried it whether or not my pattern will work.  Therefore, I'm using the "disposable" shirt and muslin princess panels.

Here's the shirt, cut using the pattern I made, with seam allowances included.

Now I'll sew on the muslin panels.  Below you see the results.  I've decided I think it's good enough, and after experimenting with sleeves, I think sewing on the sleeves will actually solve the last of the fit issues I have with the shirt.