Hi Luke
Big pictures are scary, aren't they? But transition is something you achieve through taking lots of small steps, one at a time, and learning as you go.
The most important thing you need to transition isn't hormones, but a mirror. It can be a cheap mirror, the sort you buy at a dollar store or pound shop.
One of my first gender therapists was a Polish guy called Malinowski who was the spitting image of Albert Einstein. He gave me a piece of advice that stuck so well I feel every trans person needs to have it stuck to the top of their mirror.
'Stop building your own invisible prison.'
You are not a gender, you are a complete human being. You are an individual, you are unique, and there is nobody else like you anywhere in the world. There has never been anyone alive exactly like you at any point in history and there never will be another you at any point in the future.
This is the only thing you share with everyone else alive in the world today.
Compare and contrast yourself with others by all means as a learning experience, but not in a way which puts you down or makes you feel bad.
You don't have to reach a standard to be acceptable or 'real' as trans, you just have to find yourself. That's all you have to do.
You're young, still a teenager, and the one thing the world needs as well as others is a fresh perspective or new slant.
Besides I wouldn't worry about what people think because by the weekend everyone will have forgotten and by the middle of next week it will be history.
Before you can pass to other people you first have to master passing to yourself in front of that mirror, day in, day out.
You will also need a mirror for looking at yourself, getting to know yourself, and recognizing all that what makes you unique.
Be well.