B.FTech

Hi Fathima,
B.F.Tech i.e. Bachelor of fashion technology is an undergraduate fashion and interior designing course. Its duration is 4-years. Eligibility is 10+2 or equivalent.
It focuses on advanced garment construction, tailoring, fitting, formal wear techniques and many more.
The course covers creative and technical aspects of pattern making, construction, design, colour and textiles, and fashion history and business.
The degree is helpful in working areas of clothing, ready-to-wear, costume design, strategy, and designing. After completing the course, one has an option of self-employment as an entrepreneur or of setting up their own design studios and workshops.
They also have the option of going for higher degrees. They can also become an illustrator; who draws free hand sketches of designer's ideas.

Now, that you have done your BFTech, you can intern in a fashion house or even work for a year, if you want to.
For postgraduation, you can do MFTech. That depends on where you want to do it. If you want to study in the US or the UK, then work in a fashion house and work on your portfolio. Remember, your CV must be great.
After doing MFTech, you can pursue MFM (Master's in Fashion Management).
Or you can also go for an MA in Fashion Journalism if you're interested in that.
There are also many options like Fashion Communication, Fashion designing, Textile, Apparel, jewellery, leather designing and manufacturing, etc.
It's completely up to you, your interest and the things you're good at.
If you have any queries feel free to drop it off in the comment box.