How do I love my body?

I’ve always hated myself, especially my body. I’ve always been overweight and even though I am losing it (10lb so far, I’m currently 122lb and 5’0) I look in the mirror and I still see so much fat and I just feel like it’s not working. I hate my face how it’s full of acne and every time I smile I have these creases that look like wrinkles. My thighs are really fat, and I have so many stretch marks. My mom looks at them and see says how I can’t have children because I will get more stretch marks and it looks so ugly. My calves are also big and it looks so disproportional to my already short figure. I really want to cosplay and cosplay is my main motivation to lose weight but my hatred for my body is too much that all I can think about is how ugly I am and nothing will ever look good on me. Everyday I look in the mirror I just wanna smash it to pieces and cry. I want to slice up every imperfection and throw it away. It’s so agonizingly painful that I want to hide every aspect of my body. How do people love themselves?