I've been noticing a lot of people don't know how to install CSP brushes, so I thought I might make a quick tutorial for the folks who have aren't sure how to install .sut files!
Luckily this is pretty easy to do and you can do it with every resource you may download [this technique works for all custom brushes you download outside of Clip Studio Assets [which installs brushes right into your program [check it out sometime!] as well as textures and other things.]
To add some preface; when someone uploads 'resources' - whether it be textures, brushes, patterns, or even color palettes; it's pretty typical to zip it into a compressed folder, sometimes called a 'rar' or a 'zip' or my personal preference a '7z.' This is really confusing for first time users, it definitely was for me when I first experienced it downloading custom content for Sims 3! But it's easy to deal with when you get the hang of it, so don't worry! They're not as complicated as they seem.
From my experience, the reason