- Open all images. Duplicate the Layer by right click on it.
2. Match the color by going to Image>Adjustment>Match Color. Select the source and adjust Fade, Luminance, Color Intensity.
3. Move the sunset image into original image.
4. Add a Vector Mask.
5. Select Gradient Tool and gradient sunset color from bottom to top. You may try more than once.
6. Result.
Please review the step by step 5 minute video: