What have you learned today that improved your play?

I learned that i should always communicate no matter what, especially when i picked fiora in champ select, nobody picked a tank so i took it upon myself to become the tank, and instead of telling my team to stick by me so i can dive in and disrupt the team i kept my silence and assumed that they would do that and not go and contest the elder dragon when it's useless to us and should wait for me and then ashe arrow them to engage. They threw and all my hard work disappeared, feels bad man. I also learned that tank fiora is stupid as all hell.