Colour grading my music video

Colour grading basically is an effect which manipulates the by adjusting the brightness, colour and contrast. First step to begin colour grading in by creating an adjustmnet layer, this means that I don't need to repeat the process of adding colour grading to every single clip, I can just copy and paste it.
Once an adujustment layer is created, I can apply effects to it, which will carry over to the footage. The most common effect used for colour grading is the 'Three-way colour' corrector. The following powerpoint shows my experiment with the three way colour effect. I gave the footage more of a cool colour, it between an blue and purple.