can you use a custom brush in paint tool sai to make a pattern

(!) Embedding in create-on-demand or design-it-yourself software or services (individuals selling finished artwork or products for sale on print-on-demand sites OK). (!) Global or international print advertising campaigns. (!) Use by organizations or subsidiaries thereof with annual revenue of more than $250 million USD. ✔ Desktop, web, mobile, and video game applications (single app). ✔ Print and outdoor advertising (local & national campaigns). ✔ Use in broadcast, film and streaming content (up to 500,000 lifetime views). ✔ Video advertising (up to 500,000 lifetime views). ✔ Physical end products offered for sale such as homewares, apparel, product packaging, art-prints, greeting-cards, posters, etc (up to 250,000 units). ✔ Creation of digital stock illustration & photography for sale including NFT's. ✔ Branding, logos, stationery, posters and signage. ✔ Social media content for personal, company and client use. ✔ Music packaging in physical and digital formats.

Double-clicking the layer will let you change it's name.✔ Print and digital publishing projects including comics, book covers, magazines, editorial illustrations and picture books.

Under the new set button there's a button to clear the layer you have selected and next to that you can press the trash can to delete the layer entirely.

Underneath the new layers there are two ways to merge a layer into the one beneath it.Next to that is the 'New Layer Set' button, pressing it gives you folders you can put groups of layers in and control them as if they're one.This gives you a special kind of layer that has a different set of tools.

Next to the new layer button is the 'New Linework Layer' button.

Above the list of layers there is an icon of a blank page with a folded corner, clicking that will give you a new layer.

On each layer there is an image of an eye, clicking the icon will toggle the visibility of the layer.

They allow you to change parts of an artwork without touching the rest and change how things overlap in your artwork. On the side of your window, there should be a large grey box with a small purple box inside it that says 'Layer 1.' Layers are like painting on sheets of glass and placing the sheets on top of each other to make a picture.

Can you use a custom brush in paint tool sai to make a pattern