Any team that makes it to the Super Bowl is obviously doing several things right. Whether it's schemes, roster decisions or general philosophies and play style, it's working. And, every offseason, teams around the NFL somewhat try to duplicate what's working.

The Green Bay Packers were the model two years ago. After winning Super Bowl XLV, the offensive system of play-calling head coach Mike McCarthy was used as a reference point throughout the league, as was defensive coordinator Dom Capers' 3-4 scheme.

Every team has its own style, of course, but it's natural -- and smart -- for the 30 teams not in the Super Bowl to learn from the success of the final two teams remaining in the postseason.

The San Francisco 49ers and Baltimore Ravens didn't emerge out of the bottom of their respective conferences this season. Both of this year's Super Bowl representatives lost in their conference championship games last season and took the next step forward this season.

Clearly, the 49ers and Ravens are doing something right.

It's not that the Packers need to re-work their entire plan. After all, Green Bay's last three postseasons have ended with a Super Bowl championship and two divisional-round exits. All things considered, that's very good and far better than the vast majority of NFL teams. But, in the past two years, it's not been good enough to make it back to the Super Bowl.

With Sunday's game the last stop before a long offseason, five things that the Packers could learn from the success of the 49ers and Ravens: