So since you personally asked me to read your book, I gladly gave it a read since it was so sweet, simple and short. I hope you wont mind a little bit of constructive criticism and will take it in a positive way.
I think if you keep rereading your own chapters to spot out all sorts of grammatical errors, related to tense, voice and speech you can take this far! Also, maybe make the dialogues between the characters sound their age? Since you have a beautiful concept It'll all be worth it.
Thank you.
I hope you ljke my book .