Painting & Drawing Tools
Photoshop has drawing tools such as a paintbrush or pen you can use to draw directly onto the canvas. You’ll find the paintbrush on the toolbox bar on the left hand side. Once you’ve selected the paintbrush, click the brush size icon on the top panel.
Select the brush size and hardness. To do this drag the sliders.
Select a color from the color palette on the left hand side. Use the vertical color slider in the middle to change the color tone by moving the arrows along the bar. Then using the large square color field on the left, click on the color you want.
Now you can draw on the canvas.