You can post sell offers by clicking the "Post a New Sell Offer" link, provided in the section My Trade Offers after signing in your account.
Follow below mentioned steps to post sell Leads
Firstly, click on the "Post a New Sell Offer" button.
Fill the required fields with accurate details.
Click on the Continue button if you want to continue or Reset if you want to repeat the action.
You can also attach product photo by clicking browse button