Use the Vector Brush tool to apply vector brush strokes to your design. A range of categorized brushes can be chosen, with each category containing brushes of varying properties and characteristics.
A key characteristic of vector brush strokes (compared to raster brush strokes) is that they can be edited using the Node Tool after applying to the page.
If you want to save a brush, these can be stored in the panel as a custom brush for future use.
Affinity Designer provides an impressive selection of brushes for use with your brush tools. As well as using the Vector Brush Tool to apply 'freehand' vector brush strokes to your page, brush strokes can be applied to object outlines and around photos.
For additional photo-realistic textures, you can use the Paint Brush (e.g., spray brushes) and other brush-based tools to enhance your vector design.
Brush strokes are applied to your page using a combination of the Vector Brush Tool, the Brushes panel and the tool's context toolbar.