Haha well I’m glad you like them, though honestly my way of doing this probably ain’t the smartest
For clothes and other stuff I use a range of solid grays that I run through the grain filter. HOWEVER since it’s a dense cluster of pixels it can come out as a black mess in print unless you really know what you’re doing (1200dpi offset printing and prayers) so I don’t actually recommend this for anyone!
For shading I use this simple pattern. Smart people would use only variations of this, only it’s hard to put two patterns on top of each other without causing the ever-annoying Moiré effect so I’m instead combining this with the grain stuff to get a wider range of shades