The final effect figure is as follows.
Final effect Diagram
Create a new 580x300 pixel or larger white background file in Photoshop. Create a new layer, choose the Brush Tool (B), select the window > brush/or keyboard function keys F5 turn on the brush option, press D to set the default black and white foreground color, using the brush setting options inside these settings. Start with a regular round brush. Depending on the size of the splash effect you want to select the brush size, you can choose the size of the space and the density of the splash point distribution.
After setting the brush in the picture above, drag on the white background canvas to see the underlying layer of splash ink in the image below.Classification: