Higgins Mom : Heres the site for the sweaters I made for my IG grandson.
http://members.aol.com/Graceleb/pattern.html
Hope the link works so you can take a look at it, its similar to what you are knitting but on a circular knitting needle. Just have to adjust it from the chest and back curve as the IG has a more slender body. I know you can figure it out.