Get Products to sell on Amazon, Walmart, Ebay

Hi, we have our website freedomforclothing.com and have integrated via sellbrite amazon, walmart and ebay. Now, we don't really sell yet. Even though our products are high quality clothing from Germany and are all well known brands in Europe: Hunting & Sailing Clothes. We need your help to start selling. Obviously, we want to have as little returns as possible ;)