Recently I downloaded a ton of lace-brushes in Clip Studio Paint and it made me wonder just how many brushes they must use in the cards for the more intricate details. The Teacher-Set is a great example with the amount of detail and pattern it has, not only are there a ton of chains which no doubt are all a single brush, but upon closer inspection I also noticed this particular lace-pattern, all one brush as well.

That's not meant to be a "Rargh the artists are lazy!!" statement by the by, they use them to excellent effect and I'm pretty sure they make the majority of brushes themselves, maybe even all of them, and must have a huge library (heck, Everlasting has a bunch of unique patterns, it's wild). It's just fun to dissect cards a little.

//Edit: Here's another interesting one, doubly interesting actually, from the Wonderland-Set

This particular pattern is extreeeemely detailed and made of a ton of components, so they use it in every single card. And because it's so intricate and big you can really see the different things they do with it. Mari gets double use for example, on her socks and the cape, and the netted part is filled with colour for her on the cape. Riko gets the bottom part totally transparent, Kanan only gets it on her sleeve, combined with other brushes.

Additionally, the thicker piece of rope (I think) used for the edges of the clothes is the same in both sets, so I'm fairly certain that's a brush too, a more subtle one.