The lighting in the image above is a good example of split lighting. As you can see from the photo, the girl is half exposed and the other half is covered by shadows causing the split. The girl in the frame is in the majority of the picture so it's easy emphasised. The colour surrounding the girl is dark and dull but her ballet outfit and flower accessory in her hair makes the image more exciting - it could also create some emphasis on her outfit also. Another idea to add is how well the colours work together, the black, pale skin and bright red all work in unity together.