Design

You are actually over qualified for this course, minimum eligibility is 10+2
Check out the link below for details:
https://www.shiksha.com/design/interior-design/course/diploma-in-interior-design-and-decoration-international-academy-for-certification-and-training-iact-c-g-road-ahmedabad-258589

Hi, Please refer to the link below for detailed information:
https://www.isdi.in/undergraduate-programs-admissions-3/.

Hi, Please refer to the link below: https://www.shiksha.com/design/nift-entrance-exam-cutoff.

Hi, Please refer to the link below:
https://www.shiksha.com/b-tech/colleges/b-tech-in-automobile-engineering-colleges-india.

Hi!
You can refer https://www.shiksha.com/college/army-institute-of-fashion-and-design/aifd-wat-exam.

Though there are no sample papers for entrance exams of students. If you are an existing student, you can get it from the library.

There are so many sample papers as such available for the entrance test. All you need to do is to be updated with the present scenario. The structure of entrance test is essay based for most of the courses.

Yes, you can apply for NIFT entrance after completion of your 12th. The NIFT offers the following 4-years B.Des. Undergraduate programs as-
1. B. Des in Accessories design
2. B. Des in Fashion Communication
3. B. Des in Fashion Design
4. B. Des in Knitwear Design
5. B. Des in Leather Design
6. B. Des in T

Hey Priya,
In my opinion, you should not pursue diploma.
I hope this helps you.
Thanks.