Lately I've been uploading Krita project files and templates to Gumroad. On this page I'll list them.
Free Tutorial Project Files
Free Krita Clipping Masks' Example Techniques Project Files: of the clipping masks tutorial.
Free Krita Halftone Effect Project Files Package: of the halftone effect and halftone gradient tutorial.
Free Krita Beveled Text Effect Project Files Package: of the beveled text effect tutorial.
Duotone Photo Effect Customizable Template (80 Gradient Map Presets) for Krita: of the duotone effect tutorial.
Other Files
Halftone Drop Shadow Effect (and its free sample).