OMG! I’ve been wanting to make this same pair of shoes in sugar for some time now. I’m not sure if you’re familiar with Iris Rezoagli of Cake Dreams by Iris but she makes very nice realistic gum paste shoes. They literally look like you can stick your feet in them and walk away, lol. Anyway, she recently released a DVD showing how she makes her shoes. It’s a little pricey at $44.99US but it’s very informative and it comes with templates and I believe it includes a template for closed platform shoes. Iris also released a book of various templates you can buy to make other styles of shoes and I think it’s $19.99US. You can buy the DVD and template book from http://www.sugardelites.com/ or directly from Iris’s Etsy page https://www.etsy.com/shop/cakedreamsbyiris. Iris is a member of Cakes Decor and you can check out her work here: http://cakesdecor.com/IrvachagaG1/cakes. I hope that was helpful and good luck with your shoe! :-)
Kim the "Cakeist", https://www.facebook.com/KayJaySpecialtyCakes
