Hi @lifeday, if this helps even a little more, What Null is telling you, and I hope he doesn't mind if I give a little bit more about this, but when you use the Gmic plugin, once the UI (User Interface.....when you have G'mic up and running in front of you), at the top you see the list of filters. The filters have a "+" sign next to them to click on, which allows a drop down menu to appear showing you the many special effects/filters you can use below each main filter category. The specific technique Null and Dipstick are referring to, from everything I've seen following their given info, the particular main filter you need to click on is "Artistic", which is, I think, the third one from the top. Click on the plus sign next to it. You'll then see many special effects display. Scroll down on them until you see the one that says, "Stylize". Once you click on/select "Stylize" a new UI (User Interface) shows just on the right side of the entire plugin. At the top of the right side you should see a button you can click on, right across from the word "Style". Once you click on that arrow button, you'll then see more of what Null and Dipstick are referring to. At least this is how I understood the info.
I know it can be a bit confusing for some people. I hope this has helped some understand it a bit more. If I have failed to understand it, I apologize for adding to any confusion.