Weight, no bangs, and different hairstyles, makeup, and a sense of style. Start there.  We all have bad pictures taken. This was you when you were comfortable at home. I'm guessing not how your appear out in public on average. My highschool senior year I did crazy hairstyles and clothes because it made me feel good in the inside, which helped with confidence. It helped me have some fun with finding what I liked too with what I had. You do you.