By registering the brush shapes of frequently used brushes and pens as presets, you can convert vector line drawings to your favorite touch.
Prepare a vector line drawing and click the spanner mark on the tool property panel of the pen or brush you like
2 Open the sub-tool details → Open the brush shape and register the brush shape in the preset
3Select all lines of the prepared vector line drawing with the object tool, and change the brush shape and brush size from the tool property panel
※ Processing here is heavy depending on work environment.
Depending on the brush shape and so on used, it may be necessary to redraw details and adjust the line width, but I think that it is a convenient method because the background of a monotonous line can be analog touch, etc. quite easily.