Now we have the lining and the cover ready to become
With your lining fabric facing wrong side out (which is
how you stitched it, so you shouldn’t have to do
anything) slip your cover fabric inside.
Your cover’s side with the embroidery should be hidden
against the lining, so that when you look inside, you
can see the back of your stabilizer. Carefully line up
the tops of these two fabrics, and sew a seam across the
top to make them one.