Editing software can improve your creative writing, and since you're alerted to corrections and suggestions, you can also expect to learn a lot and grow as a writer.
First-person narration lets you pack every moment with personality and explore your writer's voice to the max, but it can be a tricky point-of-view to pull off for the course of an entire book.
One way to create a memorable story is to take a minute to let your characters breathe. Build a scene where you exit the narrative structure and allow your readers to bond with the characters.
When writing phone conversations, does your one-sided dialogue give insight into the character of one or both participants or the relationship between them? Is the conversation moving the plot forward?