Blanket Woes

As part of the charity sewing circle, I was given an already made blanket, and asked to add a flannel border layering it under the entire blanket.  This is supposed to make it a little bigger and little more cuddly.  I thought, "How hard can it be?" - Famous last words.

Oof.  I way underestimated the amount of stretching the blanket would do as I sewed a blanket stitch on it.  The flannel does not lay flat at all.  I was so irritated that I had to walk away after sewing 2 sides.  I came back the next day and just finished it, so that it would be done.  I tried pinning it tons, but it didn't really help.  Yarn doesn't pin well.  I don't particularly like how it turned out, but it was a good experiment.  

The back doesn't lay very flat either, but since it's going to someone in need I'm not going to whine too much about it.  I'm sure they'll be happy to have a blanket for their baby.