14, trying to lose weight, but feeling insecure about my broad shoulders and feet.

So I'm mainly trying to lose weight in my stomach. [As last I've checked I'm 258lbs.] But I have a question. Can my shoulders get slimmer and less broad? I don't like how wide they are, and I feel like it's because of my weight. Can they slim down the more I lose weight? Or are they stuck like this? Can I get surgery to get them slimmer?

It's the same with my feet as well. I have big feet, making it hard to find shoes that fit me. [11inches in women, 9inches in men] Will my feet get smaller the more I lose weight? Is there surgery to make my feet smaller? I know I can't make them tiny but I just want smaller feet.