Could I have some constructive criticism on this book I'm writing?

Definitely not too young! But I do recommend you pick up tips wherever you are able. So read a lot of different genres, even those outside of your comfort zone, and practice a lot.

Seek feedback from strangers as opposed to friends and teachers - they are likely to be biased - so you know what your weak points are. But at the moment just concentrate on finding your feet. If you are only just starting out, you should definitely not expect too much of yourself.

Do not be annoyed because you can't seem to find the right "flow", or because your sentences are descriptive, or because your dialogue isn't that realistic. You're still learning. So read, write, get feedback and learn the benefits of writing to the end before going back to edit.

And for now forget about publishing. You are definitely putting the cart before the horse there! But if you are thinking of places to get feedback, try places such as http://www.critiquecircle.com.

You're not too young to write a book. I was 13 when I started to write a novel. I didn't finish it, but it was both challenging a fun to immerse myself in my own story.

If you publish it and only a few people read it, don't feel discouraged and think you can't write. Learn from it and the next one will probably be better.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.