Smart Objects in Photoshop are like magic windows into your mockups. They allow you to insert your design seamlessly without ever affecting the original layout. Here’s how to use them:

1. Open the PSD file in Photoshop
   Launch Photoshop and open your downloaded psd file.
   
   

2. Click the green-highlighted layer
   This top layer is your Smart Object, ready to be edited.
   
   

3. Double-click the Smart Object thumbnail
   It will open in a new window where you can place your design.
   
   

4. Insert your artwork
   Add your image, logo, text, or any other creative elements.
   
   

5. Save and close the Smart Object
   Hit File > Save, then close the window. Your mockup will update automatically.
   
   

6. Export your final mockup
   Go to File > Export > Export As > JPG to
   save your finished design.
   
   

7. Share your work proudly
   Your design is now mockup-ready and presentation-perfect.