I think most of us go through an awkward phase when we are trying to find a hairstyle. I certainly still do. At 2 years on hormones I can still get a bad haircut. My advice from your pictures is maybe take it up over your ears and square off your sideburns. That being said, it can be really hard to find a style that works. I would avoid military cuts personally, unless you already have a build that is not questioned. I would also avoid the "bieber" because to me it looks like a flapper haircut. But that is my personal opinion. Keep age in mind too; it's easier for young guy to pull of certain styles and the reverse is true as well. Don't be afraid to experiment and look at what guys your age have. If you get a cut you don't like, don't stress and try something different. Remember, the only difference between a good and a bad haircut is about two weeks.