So I am making a wedding cake for my cousin (only 1 tiered) because I am also making 200 cupcakes. But she chose the design below for her cake- overall easy. What do you think they used for edible glitter? All the ones I have used are more like dust or big chunks of sanding sugar. How do you think they got that brushed look?

Help. I am starting to panic because she is getting married on my due date for LO #2- so I need to get my act together!