Novel writing is basically linked to your imagination. If you can imagine something great, then its always a good idea to make it into a story if you can readers for it, regardless of you being paid or not.
The greatest hurdle one may face in writing is expressing their imagination. You might have some good idea and you can even imagine it with great vividness, but can you express it using your writings?
If yes, then write it, and don't rush your story. Make sure you write every supporting or bypassing character properly and give them personality. They are not there to just waste words, give them a strong purpose which supports overall story. Any supporting character who is not adding to our protagonist cause is filler character, try to avoid them.
For example, our protagonist wants to become the strongest person, but a supporting character wants to become a poet. If supporting character's dream helps protagonist cause somehow, then he is adding to the story, otherwise, he is there just for the sake of being there.
The protagonist must have a distinct goal. it doesn't have to the final goal as he can set new goals for himself in the middle of the current goal or after achieving the current goal.
These are the lessons I have learned in my time of writing a story.
My biggest mistake in my story was that I gave the protagonist a big powerup at the very beginning, but fortunately, I restricted his ability to use most of it.
I wrote my first novel a couple of weeks ago. It was a story that floated in my mind for a long time. And I wanted to make it happen so I decided to finally write it. The story at the beginning might seem rushed but it settles down after the first fifteen chapters( after getting powerup).
I was hoping some people might look at it and review it, so I can correct my mistakes and write a better story which I enjoy writing and others enjoy reading.
Death: A Shadow of Darkness
There might some grammatical mistakes here and there (such as the wrong comma), but I will correct them very soon.