1. Go to OpenSea and Login with the wallet that holes your domain:
2. Once logged in, go to your Profile:
3. Under 'Collection', locate the domain you'd like to sell. If it is not visable, checked your hidden items:
4. Hover over the domain you'd like to sell and click 'list for sale':
5. Enter the starting price and duration and then click 'Complete listing'. Then, sign the transaction with your crypto wallet. 