One of the photo editing programs that I have is Adobe Lightroom 5. It works real nice. One of the things you can do with this is called Split Toning. I’m still learning how to use it, but this is one of the Images I’ve done using it. I have alot to learn.
I just recently discovered how powerful split toning can be by watching some YouTube videos. I haven’t yet had a chance to try it on my own images, but I’m looking forward to the experimentation. Your example looks great!
I have done the same thing as you have. The problem I have doing this is watching the videos and then trying to remember how to do what was told to me! It’s not easy.