After it's been sewn up, you are going to sew another seam at 1.5"in from the side. It's mostly to give it a "finished" look! I put the pins in at 2" from the side.
When you get to a corner, stop sewing, lift the foot, turn the blanket 90 degrees and continue sewing. This will give you nice, sharp corners.
Here it is! My finished baby blanket for Baby Boy #2!
I'm excited that I can give him a "handmade" product and that I got my sewing machine back out!