Converting an image to ink paint and pencil sketch

Start by opening an image of your choice.

From filter menu select Artistic>>Poster Edges. Apply settings as shown.

Duplicate the layer. From filter menu select Artistic>>Cutout. Apply settings as shown.
Change the layer mode to linear dodge.
Now the image looks like it's created using ink pen.
Duplicate the layer. From filter menu select sketch>>photocopy. Apply settings as shown.

This will create an effect as if it's a pencil sketch.