Navigate to https://www.amazon.com/shop/entreresource

Click the "Search Amazon" field. You can also find the product via "your orders" if you've purchased it recently. 

Fill in the "What do you like about this product?" field.

If you want to rearrange the order of the items in your list, choose Manage products and then drag them around as desired. 

Click "Get link" if you'd like the link to share your post once it's approved. 

How to Create a Amazon Idea List Post for Your Amazon Influencer Storefront