I made my own. I looked at a shoe and measured the parts then drew them on parchment and cut out of gp. If I didn't like the way the parts looked together then I did that particular piece over.
Took a whole d*mn afternoon, but when I finally got it perfect I labeled and laminated the pieces and nowI have my template. You know, in case, anyone ever, at some time, in the future, will ever want a gumpaste Vans shoe on their cake.