Thought I'd try doing something different. Gonna have to work on it more.

For the color at the bottom of the background, I added a white layer mask to a cloud mask and then used a black to transparent gradient on the mask to remove the portions of the paper I did not want to use and then set the blend mode to Color Dodge. I used the Vivid Light blend mode on the house in the background. I used the Screen blend mode on the woman on the left.