Here is one of my favorite sites.
http://www.pegasusor.com/chicinst.html
Oh, look. I've found another and it has a free pattern for the star as well as directions as to how to do chicken scratch.
http://www.ca.uky.edu/HES/fcs/FACTSHTS/CT-MMB-712.pdf
Try using google and ask for "chicken scratch embroidery images". There are lots and lots of examples.