Amazon Merch T-Shirt building business, design T Shirts

So we are changing up a project we had posted a bit ago. What we want to do is find someone who can grab all the top current T-Shirts sellers on Amazon and around the internet THEN change them a slight bit to avoid any copyright infringement. We want to base our designs off niches and designs that are already selling! There is no need to reinvent the wheel here. All we need you to do is find a design/shirt that was selling well, and improve the design in some way. As you may know Amazon ranks the items by popularity, so we want you to use this data to decide which shirts to produce. Design can not include copyrighted work, such as Disney characters or trademarked phrases. We would want you to check all designs that you design on either Trademarkia or USPTO to make sure. We will pay $4-6 per design and are looking to design hundreds and hundreds and hundreds! There are some designs we will have on our own but the rest need you to scour Amazon and the internet for top sales/designs. If you have experience with Amazon merch, very helpful, if not, we can send you the design requirements to upload everything.