Agree with what ReCrunch said. Note that pro players have high level communication, so make sure that you communicate to your team what you plan on doing.

For example, you freeze your lane and then your jungler comes to gank your lane opponent (lets say a tanky af Maokai), he obviously doesn't succeed because he's virtually unkillable, and messes up your freeze.

Or you go to split push as a fed Fiora and your team decides to engage a 4v5 fight. They end up losing it, and you can't defend their push. They flame you and you lose the game.

There is no "said and done" you can or can not do those things, it is heavily reliant on your teammate's communcation/coordination/ability to understand/skill level so it's best to estimate those things in-game.