Generally, it is enough to use AI, PS or CorelDraw for packaging design, and these three softwares are used according to design needs. If you want to make an effect diagram, use rhinoceros software to model it. rhinoceros is enough to package the three-dimensional effect, which is easier to learn and use than other 3D software. If you want to render materials and textures, you can download a rendering software, and finally post the designed maps with PS. Hope to adopt!