I want to model, and I want to be taken seriously! How do I lose the weight?

Lumen123454321
I am 18 years old, 5'10 and 132 lbs, I'm trying to lose about 15 lbs so that I can try modeling. I have been eating 800 calories a day and running at least 4 miles a day for the last 2 weeks. (I actually went from 139 to 132lbs, but I assume that is mostly water weight) how fast do you think I will reach my goal? Do you think I need to decrease my calorie intake more?
I want to model, and I want to be taken seriously! How do I lose the weight?
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