"I think I used the scatter mosaic preset, replaced the image brush folder, using the PNG format brush. I don't know how to export the preset file, because I read and understand English. I said everything is google Translation. Sorry!"
Regarding your email. It seems like a big part of your problem is that you are painting in the black background with is muddying up everything. The example you wanted to learn is really just painting in the foreground. On a white background as well.
You can use the controls in the path start control panel to inhibit path starts. So, you could try inhibiting super low luminance values (which would be dark) from having path starts. However, you also have dark detail in your foregound image, so that might not work as well for your particular source.
You could select the background, then invert the selection so you get the foreground image selected. Then use the path start inhibit controls so that only selected areas of the canvas have path starts.
Or, you could turn on masking, and then mask the path. That way you get complete paint nibs drawn.
Here's a tip on masking and selection. Read about the paint masking options in the tip to understand what i was referring to (path vs paint mask).
If you still run into problems, try posting your question as a forum post and i'll try to answer there. helps if you attach the paint preset you are working with there.
"Thank you for your helpfull answers. Your answers so close what I need - Especially closepack2.
I did some editing on it and get colser dot.
Is it possible touches dots each other and minimum whites between them without overlapping?"
"Like Craig said, there are a lot of different ways you could build something like this. Here's one simple paint synthesizer approach.
So i'm using smooth random path start generator, a path length of 1, vector sphere painting,…"
"I am sure there are quite a few factory presets available with SA that could start you on the way to making images like that.
I am attaching a Paint Synthesizer preset that might be a good starting point for experimenting: cd_dottoss01.zip