In the brush tips folder (and in some of the brushes in a pack I downloaded recently) there are often what I can only describe as image stamps. In other words you click once on the canvas and it stamps an image - be that a tree, bolt of lightning, flower petal.

Could someone briefly explain how these are created? Is it something I can do? Can I do it from a photograph?

What I would like specifically, is a selection of 'street material' such as figures, cars, bicycles etc, which I can colour and size in the same way I can any other brush/brush tip.

Thanks in advance.

You can create a brush tip from pretty much anything you can bring into Krita. The easiest way would probably be to put whatever you want to use as a brush tip on a new layer, make a selection around it (box selection is enough) and copy it to clipboard. Then open up the brush editor, go to brush tips, and under the list of available tips, click "clipboard". If what you copied onto the clipboard has transparent pixels, you'll want to check "use color as mask". Then you'll want to tweak the spacing to a higher value so the stamps don't all get smushed on top of each other.

Also check out the animated brush tutorial in the help, under Tutorials > krita-brush-tips!

Thank you very much. I think I'll be okay following those instructions, but I presumably need to remove any background first, if I want a nice crisp stamp?

[edit] That was so much easier than I feared! Thanks.