I am creating a youtube contest entry video.. what are the best ways to make my video look professional?

I'm entering the contest to try and win two tickets to a private parachute concert. I'm a musician and find their music so beautiful, I would really love to talk to them for inspiration. How can I make my video look professional? Any lighting tips or anthing similar to that matter? How can I make it extremely interesting? I really want to express the emotional impact their songs have on me very well, so I want to have this whole "slow motion" theme going on. How would I go about doing this in a movie editing software? I really want to win this, and I want my video to be something that is honest and beautiful. any suggestions? thanks in advance.