Finally, let’s change its color tone. While the “water ceiling” layer is selected, press Ctrl/Cmd + B to adjust the Color Balance of the selected layer and then input the following values:
Next let’s create an effect similar to how our eyes work when it is open underwater. To do this, let’s activate the Rectangle tool (U).

Before creating a rectangle, let’s set its color. Click on the Color Picker square located on the tools menu and input the following on the “#” box.

With the Rectangle tool activated and the color set, let’s create the rectangle.
