It's a great premise! The way I usually go about it if I'm finding it difficult to begin, is not begin at the beginning, haha. Instead I will write down a full scene and once that's done I can generally write my way to it. I don't know if that helps, everyone's process is different. But I wish you luck. It's an amazing journey, worth every bit of the struggle.
Would you like to contribute a few pages? It's a community effort and it's open to all.