This is the result of using a gradients layer on a picture.
Here is the process:
I took this picture on a rainy day. I liked the drops and the lines of the cold plant.
First, open the picture in Photoshop. Then the first step is to change the background color. To do that, go to Image > Adjustments > replace color.
Once there, you'll find the menu for replacement. Select the background with the eye-dropper, then alter the lightness to the maximum.
Now it's time to add a new layer. Select the color to use in your gradient. I chose light pink and violet. Then select the kind of gradient you want. In this case it was lineal. Situate the mouse at the bottom of the picture, then move upwards, left button clicked. Experiment with different results, until you get the most convincing.
Then, time for the blending mode. I usually choose overlay or screen. The idea is tomake the layer kind of transparent.
And finally, I added a slight vignette, using a superthick brush, painting very close to the border on a new layer.
The process is quite easy. However, should you have any questions, don't hesitate to contact me.
Hope you liked it.