You can sell it through social e-marketing such as upload on your personal FB account, Instagram, WhatsApp, Linkedin, Twitter, etc.
In case of uploads of first copy product on Amazon, Flipkart and other such reputed e-commerce websites, you need to follow their guidelines on standard of product permissible to be uploaded for sale by the vendor.
You must mention and highlight your product to be "FIRST COPY" wherever you upload your product for sale. As per Consumer Protection Act and MRTP act, fair description of product is mandatory.