Hm. I usually discourage people from thinking too much in the first draft.
I wouldn't focus too much on grammar or spelling or anything else like that in a first draft. That's something you can always work on later.
I've found that more often than not people will stress over getting "the perfect voice," the "perfect syntax," "The perfect hook" and then story takes a backseat to making the first draft polished. A first draft isn't mean to be polished
