How to do custom Freestyle brush shape in Blender 2.74? Instead of a solid "pen" line, I would like Freestyle to use a custom brush, that is an image file (e.g. PNG) that I create. I found this post:

Blender Freestyle Brushes

And read his link:

Help doc

But it does not work. I added a LineStyle Texture layer and selected my PNG image as the Single Image Source (Mapping = Along stroke). But when I render it is the same default "pen" line and not my custom brush image.

How do you do a custom brush?

---- updates below (after trying T.K.'s suggestions):

First, I try to copy all of the settings from the teapot and then use my own brush. But that did not work at all. Here is what that looked like:



Here is what I am trying to do:



So, next I try to just use the teapot file and change the brush image to by brush image and this is what I get:



It seem to be repeating the texture instead of sliding it along like a brush?? And it is also opposite (invert?) color? The round flat part is see-through instead of the black part. So I try the “invert” under image sampling and that did not work.

It seem to be filling the line with a texture instead of using the image as a brush. How do I use an image as a brush, like in the example picture I give?
Have you looked into example .blend files for using textured strokes?  If not, try a couple of example .blend files available within the Blender 2.71 release log you cited, i.e.:


http://wiki.blender.org/index.php/File:Teapot_pencil.blend


http://wiki.blender.org/index.php/File:Mouse.Blend

Start from one of these existing line styles for textured strokes, and customize it with your texture PNG image.

EDIT: In reply to the updated question (22 May 2015)

Freestyle textured strokes always use a texture image as non-overlapping tiles repeated along stroke.  Internally, textured strokes in Freestyle are rendered using UV texture mapping (that is a general functionality of Blender).  Freestyle strokes have its own UV coordinates along stroke to map a 2D point in a texture image on to another point in the 2D stroke space.  This means that the texture image cannot be mapped in such a way that one tile overlaps on top of another.  (I guess this is a general limitation of UV texture mapping.)

I believe you need to rely on other Freestyle options to achieve what you are intended to do.  How about using the Calligraphy thickness modifier instead?