wow, these are great instructions. I will use them next time, also. The feed dog trick works, too...putting the longest side on the bottom.
Measuring through the middle of the quilt for the borders is absolutely crucial!!! in my opinion.
Also, once the pins are in (I would divide into 8ths or 16th on a large quilt), you can usually stretch the fabric of the border between pins as you sew until the fullness is worked in.
Likewise, on the short side, you can stretch the top to fit the border between pins.
Congratulations on a great quilt.
j