Writelike focuses on sentence and paragraph-level skills.
Creating a whole text requires additional macro-level skills, such as developing and concluding a complete narrative or argument, which for now are beyond the scope of Writelike (though Frankenstories can help with this).
What you should find is that the increased fluency in sentence and paragraph level skills makes it easier for you to teach larger structures, and you will also find that you have a bank of methods that you can leverage when teaching longer texts.
For example, when you locate structural breakpoints in a text—such as the first act break in a story—you can highlight the sentences on either side of the break to analyse how the writer creates the transition, then invite students to incorporate that pattern into their own draft.