Script-Fu -> Palette Knife

This is a non-adjustable script which can render a palette knife texture to an image. It does, however, render onto a separate layer, so the results can be "toned-down" as needed. (See lower example)

Original Image

Detail from "the Lovers" by Pablo Picasso


Default Settings

layer dialog:

to adjust results of palette-knife script
Since palette-knife creates a new layer and leaves it --
you can adjst the layer opacity to tone the effect down as needed. You can choose from the image menu:
(or Ctrl + L)
There you can set the layer opacity. In the example I drag the slider to 50% . . .
the "palette Knife" layer was already selected.

result modified:

opacity set to 50%

You also need to copy the following file into presets:

Installation Instructions:

;  This script should be placed 
;  in the user or system-wide script folder.
;  Windows Vista/7/8/10)
;  C:\Program Files\GIMP 2\share\gimp\2.0\scripts
;  or
;  C:\Users\YOUR-NAME\.gimp-2.8\scripts
;  Windows XP
;  C:\Program Files\GIMP 2\share\gimp\2.0\scripts
;  or
;  C:\Documents and Settings\yourname\.gimp-2.8\scripts   
;  Linux
;  /home/yourname/.gimp-2.8/scripts  
;  Linux system-wide
;  /usr/share/gimp/2.0/scripts