Nice to see how we are looking for the impasto effect.
I have downloaded and copy to my .kde user folder and 2 of them are not working by default. The presets shows a redcross in the icon. But if you change the brush manually in the brush preset editor ,then they work . It happens in the Oil hard impasto xxxxx.
The Kinfe painting 1 and Kinfe painting 2 are working perfectly.

I have been experimenting a bit adding grain. i am not totally happy with the final result, the 3d sense is not true there are some areas where the brushtroke kills the texture, that is ono of the reasons it would be cool to have color smudge texture option based on pressure. To control the canvas interaction with paint. but the canvas texturizer works well. if you want to test it.
http://dl.dropbox.com/u/16168806/Oil%20 ... urizer.kpp

nothing new for now. just changing the blending mode to softlight and adjusting the opacitiy to pressure.