How can I become an automobile or car designer: study transportation design, industrial design or automobile engineering?

I completed Diploma in EEE and now am doing an apprenticeship in Hyundai Motors India. I have an interest in automobile designing. I'm 21 now but I want to become a designer, what do I have to do next? At the same time, I'm studying Autocadd, creo, catia, nx cad, Solid works, ansys design software.