TGBF.tv has posted the footage of the Pubs Vs Pros Winter Wastland which is a fasinating watch. It's amzing to see how the pros use their techniques to overcome their opponents. If you want to become a better player, it's very important to see what the pros do. Watch replays of team matchs to get an idea of group strategy.
At the moment, I'm not in a team. So this is a shout out, I'd love to join a competitive TF2 team, with friendly members. Drop me a line if you need an extra member! I've played competitively for a few FPS's previously, so I have some experience!