a simple way to change your layer into a sketch, and then back.
if your sketches are starting to become too dark, or you don't like your lineart and you want to use it as a sketch to fix on top of it, use this shortcut!
it turns the layer color a dark blue, put it as a draft, and lower the saturation to 64% so you can still see underneath without being too blended with the underlying layers.
if you want to turn it back, there's a second shortcut that goes back!
it differs from the normal Ctrl+B blueing like this. it's easier on the eyes, and you can see what's going on underneath. plus, the layer is set as a draft automatically
there's also a red one! i usually use this one only for minor details, when black and blue are not enough, it adds a lot of clarity when my sketch is really cluttered
disclaimer: even if the reverse shortcut says "change as lineart" it does not clean up your lines. it only changes it back to when it was dark and saturated instead of a translucent blue (or red)