While CS3 is an older version, many modern .abr files remain backwards compatible. You can find free and premium options on these platforms:
To ensure the brushes are always available in your list without manually loading them each time, move the file to the Photoshop system folder: 150 brushes for adobe photoshop cs3 splatter
: Click the small arrow next to the brush icon in the top options bar. While CS3 is an older version, many modern
: Navigate to your downloaded .abr file and click Open . The Permanent Install Method While CS3 is an older version