It's your baby.
それはあなたの役目だ
It's your call.
((略式))それは君が決めることだよ
It's your chosen career.
それは君が好き好んで選んだ仕事だ
It's your go!
君の番だよ
It's your imagination.
気のせいだよ
It's your move!
君の番だ
It's your own doing.
それは君自身がしたことだ;身から出たさびだ
It's yours for the taking [the asking].
簡単に手に入る
It's「as simple as that [that simple].
(説明の最後で)それだけのことさ
italic letters
イタリック体