How to get out of silver?

1.) Play Safe, Don't be kill greedy.
2.) Always use the assassin types of champion like Zed Yasuo that can carry the team.
3.) Master 2 or 3 champions.
4.) Invite your friends i prefer Duo than Solo.
5.) Always expect bad team mates.
6.) And lastly Don't be comfortable when you are winning if you can finish it, finish it.