I'm not sure specifically who 'Nathan Alan Davis' is without more context. It could be an ordinary person, an artist, or someone in a particular field. Maybe he has an origin story related to his family, his hometown, or his journey in a certain career.
It's possible, but it's not easy. An amateur artist needs to build a strong portfolio, improve their drawing skills constantly, and network with others in the industry. Also, having a unique style and story ideas can give them an edge.
I'm afraid I have no information about Nathan Alan Davis' origin story without further details. It could be a very personal story about his upbringing, education, or how he entered a particular profession.
First off, you should develop your drawing skills by taking classes or learning from tutorials. Then, focus on creating interesting characters and plots. Networking with other comic artists and getting feedback can also help a lot.