Design

NIFT offers master in fashion management which might be what you're looking for. Heres a link to check that out- http://www.nift.ac.in/mfm.

To apply for MFM you need to have UG degree in any discipline from any Institute / University recognized by law in India or an undergraduate Diploma of minimum three years duration from NIFT / NID. There is no particular cut off announced by the college.

Yes, you can make your career in fashion designing after class 12th. There are two options for you to make in fashion designing:
1) You can do a 1 year Diploma course in fashion designing
2) You can do a regular 3 year full-fledged fashion designing course from college, if you choose 1st option that

No, Sighgad College does not offer Bachelor's design in interior designing.

You should opt for NID if you want to pursue car designing.

Through NIOS you can take class 10th exam, that will be the beginning. The last date is near, fill the form on their official website.

Hi Ayushi,
You can choose NIFT because after graduating from NIFT, you can become a good fashion designer and can get good placements for what you required that is apparel designing.