Research and Planning: Photo Manipulation

I've tried looking at the different effects I can get by manipulating the images in Photoshop. For example, there's a picture that I really liked and that I want to use, but I wanted to add a blue tint to it to give it that colder effect to it. I've taken a couple of screen shots to show the difference between the original and the new image.

 In this experiment, I used the colour balance and changed the midtones, shadows and highlights to be more blue influenced. This takes the yellow tint that can be seen on my photo.

Here I have adjusted the colour balance but also added a blue tone to it, I feel that this gives it that hospital feel to it.