On this video I spent alot of time experimenting with differnt effects and moving things around and also useing colour. One of the things I gound out about was the 'wiggler' tool. and it is used in correlation with the camera actio. What it does is move the camera around so it appears as though someone is holding a camera and moving around slightly.
Layer>new>Null effectI kept the camera on smooth option and firstly I put a key frame from null effect and add key frame for position.
Then I go to window>wigglerChange frequency and magnitude slightly and click apply. On mine I only changed it very slightly so it doessnt move around too much.Also as for position you can change it on rotation.

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