Hey Alice,
I used to be overweight when I was younger for the same reason. Food was always a comforting thing to me whenever I felt down. Unfortunately, I have been putting it back on now that I'm struggling to find work. So, I can relate to you. In my experience, losing the weight will make a HUGE difference. Honestly, your body can easily improve if you put the effort in. As for worrying about every slight imperfection, that is completely normal. I don't think I have ever met a girl who was happy with her body. It's just how we think. Truthfully, we are our worst critics. I have sisters whose appearance you'd never criticize, but they can never stop spotting their flaws. I guess, it is harder for us because we have additional body issues to worry about,lol. However, if you work on it all you will feel better. And once you feel better, you will have confidence that will override those nagging fears about any flaws or imperfections. Believe me, the little things that you care deeply about mean little to nothing to most others.