I would definitely continue with the same allowance, it's beautiful!
One thing I would do is square it up before moving on to any other pieces that go onto it.
Sharon Schamber has some videos on shrinking blocks.
http://www.youtube.com/watch?v=i6apl...C6C3CBD760D867
Video on squaring up a quilt.
http://www.youtube.com/watch?v=iQnHLkA7bTs