You know what I like about this? You didn't actually link the brushes. I don't know if you intended to, but instead, by looking at this, the industrial minded should easily be able to resolve the fact that they can easily make brushes like these themselves (I made two of my own in PSCS4 in a few seconds) and experiment, learning on one's own. And that's really the best way to instruct how to do anything.
Yes, absolutely. I'd like to share because this is the best way if you want to help other artists and so that those who really want o learn on what we do we'll be able to know and they can create their own.
That's because (something I'm becoming more and more aware of lately myself) no matter what you download, no matter what software or materials you use, you can't acquire any other artist's sense of taste or vision. To create good art you have to develop your own sensibilities, and only producing a lot of work, the kind of work you really want to make, and constantly practicing. The key, I believe, is to decide what you want to create and for it to be true to you.