Pattern was easy to follow and well written. Pattern is for a newborn hat and I wanted a 12-18 month size hat. I altered as follows: Hook size 10.0mm instead of 9.0mm. Round 3: Increased to 28 stitches. Added an extra round at the end.
Crown measures 5.5” Height measures 6.75”. Helpful chart here:http://anniespictureperfect.blogspot.com/2013/01/how-to-properly-size-crochet-hats-chart.html