I suffered a lot without my favourite Photoshop brush in Krita
If you know what a mixer brush is, here it is.
If not, look it up on youtube - it is a great help in creating textures and photobush.
It is .kpp file so it goes to C:\Users\Your Username\AppData\Roaming\krita\paintoppresets or in the Resource Management dialog, click the Import Bundles/Resources button, select the .kpp file and click Open.
How to use : CTRL+click where you need and go
Go to the clone - tool brush setting F5. Brush tip predefined try different brushtips. And the other setting like size rotation to add randomness. Creating krita brushes is an art in itself. You can create an animated tree leaf brush. Check out iforce73’s environment brushes.