These are two images.
This is the result.
- With both images open, move the foggy image into original image.
2. Blur foggy image using Gaussian Blur, Radius 45 in our example.
3. Hold Ctrl+T to select foggy image and adjust the size.
3. Add a Mask.
4. Use Gradient Tool>Linear Gradient to gradient the foggy.
5. Use the Brush to add or remove the foggy. Note: highlight the Mask, use black for removing the foggy and use white to add more foggy. Start with 15% both Opacity and flow. Then add more.
6. Add another foggy image layer. This time make it line.
7. Add a Mask. Then use Reflected Gradient.
8. Use the Brush to add or remove the foggy. Note: highlight the Mask, use black for removing the foggy and use white to add more foggy. Start with 15% both Opacity and flow. Then add more.
please review the step by step video: