3D Designs for a T-Shirt & Boxer Brief

We are seeking professional help to create 3D designs for our two upcoming products: a Men's boxer and T-shirt. The products are already in production, so the 3D designs are only for promotional purposes. The designs are simple, and I will provide you with pictures of the products are similar 3D designs that we are looking to have. We have only 2 colors of each product. I am attaching pictures of our products.