

I don't know if you could exactly call this fixing the photos, but rather making them different.
For The Sunset and heart photo I decreased saturation to -25, increased hue to +25
,darken it to -7 and set the color balance to red +80.
For the Flower photo, I wanted to make it look as surreal as possible. I wanted it to kind of look heavenly. For this photo I adjusted brightness to 100 and contrast to 40. I adjusted curve output to 219 and input to 244. I set the vibrance to 100 and saturation to 100 also.