If you want to sell your own purchased clothing on an e-commerce platform, you can follow the steps below to link:

Register an account on an e-commerce platform, such as Taobao, JD.com, Pinduoduo, etc.

Create a store and set up information such as products, prices, and shipping costs.

Publish products in the store, upload pictures of clothing, and fill in product descriptions, prices, inventory, and other information.

Choose product categories and keywords so that buyers can find your products more easily.

In the product details page, add pictures of your own clothing, size charts, material descriptions, and other information.

You can use some techniques to make your products more advantageous in search rankings, such as keyword optimization and review improvement.

You need to create a link for the product so that you can share it on social media or other websites for promotion.

The above are the general steps, and the specific operations still need to be carried out according to the rules and requirements of different platforms. It is recommended that you carefully read the relevant regulations of the platform before listing to ensure that your operation complies with the platform policy and avoid unnecessary problems.