英国采购需求：柔软眼镜盒

I'm looking to create a prototype for a new case design that, while inspired by sunglasses cases, will actually be used for holding medicine. Right now, I only have a hand-drawn sketch and a cardboard prototype. Can you let me know if you can work with these initial materials, or if a full 3D design is necessary? Also, please inform me of any additional info you might need to move forward. Thanks!