How does ps make a health poster? 1, open a blank document, open it. 2. select the image in the menu bar >; Adjust > color scale 3. Select the blue background color as. 4. select layer > new adjustment layer > color scale 5 in the menu bar. In the Layers panel, we can choose to overwrite the rotating pattern or choose the default pattern overlay method. 6. Similarly, in the Layers panel, adjust the transparency of the two layers to 80%. 7. In the menu bar, we can adjust the transparency of the layer to about 80%. Finally, in the Layers panel, you can see the following effect. 8. Finally, in the menu bar, we can select Layer >; New adjustment layer > color scale, or you can choose the default color scale. Icon for the newly adjusted color scale. 9. In the toolbar on the right side of the Layers panel. Select layer > new adjustment layer and click the new layer button.