I understand needing an artist but why a writer? If you aren’t confident in your skills as a writer then even with a proper writer it wouldn’t work. You need a solid plot but also good characters, interesting backstories linking to the world around them, motivations as to why they do things and why the world works the way it does etc.
This may sound a little harsh but it’s the harshest criticism that helps the most, I learned that from a certain editor member that I’m sure Coryn will remember. The plot you’ve got is generic and there isn’t much to go on. It’s what is wrapped around it that makes it a cohesive tale. Who is William, where does he live, how old is he, any relations be it family or love? What’s his stance on Atlantis? How does the world see Atlantis and it’s beings? Why is the planet dying? Why go to earth? How do they have superpowers? How do they even reach earth? How did the people on Earth not notice another intelligent life form in the time they have existed? How do they tell each other apart if they look identical?
There’s a few more but that’s all I can think of now. My advice is try to do this on your own, two writers for one story is a bit much and trust me you will 100% get better. I made a series 4 years ago about elemental dragons... the dummest thing I’ve ever seen in my life and now I’m working on something incredible. As for artists I’m not the person to tell you to do that alone cause I ain’t XD best thing to do is keep at it, practice and stick around the forum. The guys here are real helpful and you’ll prolly make some good friends on here, perhaps a group of em