Step-by-step: From rough sketch to a clean line art piece in Procreate
1 I decide to draw a masked character and start out with a loose and messy sketch. I also prefer doing line art on a grey background so I change the background layer by simply tapping on it. Always keep your rough sketch – you might need it later!
2 When you clean up the sketch don’t worry too much if the lines aren’t that great yet, because this is just your final guide for the actual line art. I like using Inking brushes for this stage, with the Streamline setting reduced quite a bit.
3 Tap two fingers on the layer with your clean sketch (in the Layer menu). A blue line will appear above the canvas. Slowly swipe left to reduce the Opacity to the point where you can still see the sketch, but can draw over it easily on a new layer.