a pen i made to help mimic omori's artstyle.
if you're doing the blueish-purple outline colour of headspace, it'll look kinda muddy. i like to do this trick to make the line art less muddy.
1) duplicate the line art layer

2) use tone curve and set the graph to something like this

3) clip the copied layer to the first line art layer and set it to overlay

4) enjoy :D
