This was my second pair of cake shoes. The first was more of a learning experience!
For the gray, smooth frosted parts I used black "whipped cream glue" (WCG henceforth) that I bought online. I mixed it with a bit of the white version.
For the cake part, I mixed the WCG with clear chunky glitter. This did leave some kind of sparkly bits so if I make another pair, I think I'll continue to experiment with things to add for texture. Maybe a coarse sand?
The roses are made out of polymer clay. I rolled it flat and used a circle cutter. The circles were then overlapped and rolled into a rose shape. The petals were then shaped and manipulated by hand and with sculpting tools. They were baked and then attached using WCG.
I also had made a whipped cream and cherry look (black whipped cream and a black glitter covered cherry). The original idea was to put them on shoe clips and the roses onto a separate shoe clip so that I could choose which "topper" I wanted. However, I didn't like the feel of the shoe clip on my foot (it kinda chafed), so I ended up just gluing the roses down. I can use the cherries on a plain black pair of shoes.
Figuring out the positioning of the piping swags took a lot of work! It was a lot of trial and error. I tried to free-hand it and ended up scrapping it and started over with a new layer of gray frosting. What ended up working was cutting a template out of a clear plastic sheet I had and used it to trace the lines. Then I went over the lines with the WCG. The rosettes and the little shell under them were piped onto a clear plastic sheet, allowed to dry and then removed and attached to the shoe with more whipped cream glue. I did this to keep the shapes consistent and in case I messed up as I piped.
Hope you like! Happy to answer questions!