this is how i've done all my lineart up until now, whole folder set to multiply, binarization / threshold correction layer on top, and white fill layer on bottom, so i can be sloppy and use the Liquify tool to nudge stuff but keep it pixel perfect, or draw w/ white for correction on multiple layers

been forcing myself to work with vector layers in clip studio so that i can use the vector eraser to quickly touch up lines when inking, painful fighting against my muscle memory but it's gonna save me sooo much time