Paintbrush emoji is the picture of an item, which is used for creating pictures using different sorts of paints like watercolors or oils — it cannot draw by itself, unlike the thing, shown by 🖍 Crayon emoji. Anyway, it appears in the context of art and drawing in particular; it may symbolize that the user paints, professionally or occasionally. It may also symbolize inspiration.
Examples of using
“I wish I could draw all this beauty 🖌”
“I love painting 🖌”