Jewelry design pays attention to the combination of creativity, technology and market. The basis of painting is just a way to express creativity. If you have no painting foundation or have little confidence in painting, you can choose to study design software, especially jewelry professional software, such as CorelDRAW, and three-dimensional software such as JewelCAD, Rhino and Matrix. Here I suggest you learn 3D software first, which is more promising. Rhino is a promising software. He not only specializes in jewelry design, but also engages in many other industries. The suitable teaching material is Rhino 3D, from introduction to specialty. This book is from scratch to learn jewelry and watch design. After buying the book, their company can provide a question-and-answer forum, hoping to help you.
I wish you an early realization of your dream!