Weight loose tips and can I model

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Hi in 5'10 5'11 and I weight about 130 most of it is muscle in my legs form track I was wondering if 1 I could model and of you have any weight lose tips I eat a lot of junk food and excerise a little. I would also like to apply to really good agency's i use to get approached by agents when I was younger but not as much any more and I get told by a lot of people I should model so I was wondering what tip you have for me for all aspect of weight lose and modeling thanks.