I use digital art to render design comps prior to answering calls for art or painting commissions, and to create digital renditions of my own originals to create prints, stickers, and print-on-demand products (products with my art printed on them).
I make digital renderings prior to painting for some calls and commissions when a client wants to see my proposed design for approval before I begin.
Sometimes I create the digital rendering before painting a specific scene to use as reference while I paint.
Reproductions are full or partial digital copies of artwork I've already painted. I create the digital versions so that I can make prints, stickers, or put my art on products.