Preparation for Solo Queue

So, I'm looking to play ranked, but then there's that inner fear that stops me from doing so. Any tips to be brave enough to play ranked? For instance, I play mainly on top and adc. I could call myself decent at the game. I cs pretty well (I guess xd), and I try to suit for the matchup, position well etc. My main champs are Gnar, Quinn and Sivir, eventually Trist, Varus and Naut (if on supp).
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