Should i play ranked?

Hello, i have been wondering for quite some time already to start to play ranked, but i dont know if im ready to play with big bois. I played about 13 ranked games in previous season (placements including) and ALL of them were total mess, but i have improved, i know what each drag does, i ve become more knowledgable about items and mechanics! So anyway, should i start to play ranked or should i improve more? Im planning to play wukong jungle. I anyone wants i can post my (if it is allowed on these boards ;D).
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