Exercise Schedule for 16yr Old Female?

Im 16 years old girl that goes to the gym everyday! I'm confused on what excises to do. I want to tone up my stomach(abs) get more upper body strength and tone up legs. I was wondering what machines should I use and for how long and the order? can I also eat whatever I want or should I go on a diet? I'm 113lb so I'm not trying to loose weight I'm just trying to tone up.
 
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