Can one of the Kritajans show me how to draw strokes for some who are pointed? Something is shown in no tut. Too bad that there is no Krita seminar where everything is shown.

Do you mean dashed lines with arrows at the end? If so, it's quite easy.

Draw a line in a vector layer. Select it with the Select Shapes Tool, then go to the Tool Options docker. In the docker, the central tab is the line properties tab. There you can make a line be dashed with arrows and other changes.

https://imgur.com/a/4Cga8XK

Thanks for the answer. But I wanted to know how a line upwards runs more and more tight. Like a blade of grass.

Edit the settings of a simple brush preset to give size changing with distance:

https://imgur.com/a/ptYEPoV