Pen & Ink Finisher Action:
The result of the Sketch Action has an appearance of a Soft Pencil Sketch, which usually lacks texture and contrast compared to a Pen & Ink drawing.
The goal of the Pen & Ink Finisher Action is to add a little texture and contrast to the image without making it too dark and muddy.
Run the Sketch Action, Flatten.
Run the Pen & Ink Action.
Double click on the top layer.
Adjust the Blend-If lever on lower right while viewing the shadow detail in the image.
190 seems to be the magic number most of the time.
Lower the opacity to lighten the texture in the mid-tone areas.
Turn the top layer on and off to see the difference of the effect.
At this stage you could add a layer mask to the top layer and paint black in the mask where you want to lessen or remove the pen & ink affect in the lighter areas.