Add Realistic Drop Shadows to Text in Photoshop (Multiple Shadows)
A single Drop Shadow often looks flat. By layering multiple shadows with varying size, distance, and opacity, you can create a richer, more realistic result. Follow these steps to add and fine-tune multiple Drop Shadows on any text layer in Photoshop.

Step-by-step instructions
Open Layer Style for your text
Select the text layer.
Double-click the layer (empty area) to open Layer Style, or go Layer → Layer Style → Drop Shadow.
Enable Drop Shadow.
Create the base shadow
Drag in the canvas to position the shadow, or adjust Distance in the Drop Shadow settings.
Increase Size to soften the shadow and set Opacity around 15%.
Keep Use Global Light checked so added shadows share the same angle.
Add secondary shadows for depth
Click the + button in Drop Shadow to add a second shadow.
Reduce Distance to bring it closer to the text, lower Size as needed, and set Opacity around 13%.
Click + again to add a third shadow; bring it even closer and fine-tune Size/Opacity for subtle layering.
Add a tight contact shadow (optional)
Click + to add a fourth shadow positioned very near the text.
Use a small Size and adjust Distance to sit close; increase Opacity slightly if needed for a crisp contact edge.
Leave Use Global Light on for consistent direction (or uncheck for independent angles).
Apply and refine later
Click OK to apply all shadows.
To tweak later, reopen Layer Style and adjust individual shadows (for example, set the closest one to about 7% Opacity).