u/Glass-Ad-3843

I am planning to start as an Amazon seller of co-ord set and maybe nighty. For now I am getting it from a contract manufacturer, I want to know downside and process of starting scaling a business like this, my aim rn is to book online and I also have plan to make it big to reach the retail market and if I am able to make it I'll open my own garments manufacturing. I have a small retail shop of all items like suits etc, also I have a tailoring setup but they are not capable of doing this rn.

Please give suggestions about amazon and how to start.