Editing

I have filmed my footage for my short documentary and i am now ready to edit. In my edit i aim to have long slow shots as she is a singer and fast short scenes will not fit the theme.
i have shot the video from two angles on some scenes of he singing and also playing the piano i thought this would look good once i have completed my edit.
When editing i will have to change the sound levels as some footage is louder than others this is because i have shot the video in different locations.
i used the flip HD camera which is a high quailty camera so i want to get the best look from my video as possible by ie. coloring in the footage and also smoothing the image