Here is another that also has the template http://rosesen.wordpress.com/2010/10/06/gumpaste-shoe-tips-and-template/
This may also be helpful for the heel. I have never used but will definitely try it if I ever do another shoe:
http://cakecentral.com/g/i/2853701/a/3265480/just-wanted-to-share-with-you-all-how-i-made-a-high-heel-mould-works-perfectly-not-cost-involved-just-an-old-3ltr-milk-bottle-i-cut-out-this-inexpense