How to loose weight?

I'm not fat and I'm definitly not skinny. I mean I beleive I'm not fat, but I want to be thinner. Like my calves jiggle quit a bit and I just find it really unattractive

let me know if I am in an ok shape (below)
im 5'3
112 pounds
14 years old
i wear a size 5 in jeans
27" waist

How to loose weight?
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