Now you can paint, place text or make any image on this layer. The image you make will be the brush.
Select>All.
Now over to the brushes pallet (Windows>Show Brushes) Click on the arrow pointing right on the top right of the pallet. From that menu, click on "Define Brush".
Select the Paint Brush tool from the Tool bar. Now you should see your custom brush in the pallet, click on it to make it active. Helpful Tip: To delete an unwanted bush from the brushes pallet, hold down the Ctrl key (Mac: Command) and click on any brush to delete it.
Now youłre ready to paint on the image using the custom brush you made.