2.) Just because you are playing at home does not mean you are entitled to a victory (Brazil 2014, France 2016, Bayern Munich 2012, etc....)
3.) Always have a plan B in case your star player gets injured and execute such a plan to perfection.
4.) If you have a clear header, do not hit the ball over the net (Griezmann '65)
5.) Football is fun.
Congratulations to Portugal.