One easy mistake to make with the first novel is to expand the short story. Some things are better as a story; you cannot dilute things into a novel. I think the first hundred pages of a novel are very important. That's where you set things up: the world, the characters. Once you've set that up, it'll be much easier.
Yiyun LiI always tell my students to go back after a hundred pages and rewrite from the beginning. It's really harder if you've already finished four hundred pages and realize the first hundred aren't working.
Yiyun LiYou can write about a country without taking a stand, but you cannot write about a country without noting that there's history, and that there's politics going on. To me, that's the same if you write about America. You don't have to write about politics, but the politics have to be present in the characters.
Yiyun Li