YOU NEED TO CAPTURE THE ATTENTION OF
YOUR READER AS EARLY AS POSSIBLE!
Most new writers love to write. In fact, they love to write everything they can think of in order to inform the reader about every fact and aspect of the story, the setting, the characters, the situation, etc. They will write until the cows come home before they get to the point. And that's sometimes the cause of the reader closing the book and looking for something else that doesn't drone on and on while it meanders slowly in its circuitous route toward something more interesting.
Obviously, backstory is important to your story. However, it's not the most important aspect. Grabbing the reader's attention is the critical issue to consider when you start writing. If you can do that with a narrative hook in the first few paragraphs, you can lock your reader in for another 50 or 75 pages. Provide them with a situation that places a question in their mind, and they'll keep reading until they discover the answer. That gives you, as the writer of this epic, some breathing room that you can use to weave your back story in so the reader can become intimately familiar with your characters while you let the plot play out.
I hope you will take the seven minutes required to view the video below. Then take another seven minutes and read the first few pages of your WIP. After you've done that, answer this question: Does the beginning of your WIP capture your attention? If not, maybe you need to do a little housekeeping and rearranging. Get the interesting bits up front so your reader can discover them early on.
Good luck. For some additional insight on openings, check this ARTICLE.
For a video version of this topic, visit my YouTube channel HERE.
I hope you'll leave me a comment. Keep writing. Someone has to do it.