Graphic Designer for Client’s Embroidery Sweatshirt Designs

I am looking for a creative individual to help “reinvent” the current designs on my client’s website, Sick-Swag.com. The designs are for embroidered sweatshirts, and the goal is to maintain their simplicity and the incorporation of flowers and butterflies, while giving them an updated, more polished look. You must be able to create designs that can be provided to a manufacturer for mass production. I don’t want a complete redesign, but rather subtle enhancements to make the designs feel fresh and refined.