Baby and Toddler Pochos

When searching the site, I found a pattern for a simple baby/toddler ponch where you make two rectangles and sew them together: Here is the patterm: http://knitting.about.com/gi/dynamic/offsite.htm?site=http://radio.weblogs.com/0129449/categories/Knitting/2004/09/16.html

I was wondering how to know how wide and how long to make the rectangles to fit each individual child. How would you measure a child for this type of garment? Does the child’s head size come into the equation?
Thanks for the help. I am a beginner… but I really want to learn.
Ellie :slight_smile:

http://www.craftown.com/knit/knit41.htm

http://www.craftown.com/knit/knit17.htm

Here are some similar patterns. Maybe you can get some sizes off of these.