Greetings Shalu!

Hope you're doing great.

National Institute of Fashion Technology(NIFT) is a prestigious designing institute of national importance. Getting admission into NIFT isn't a cakewalk and need to have good command over fashion and technology-based applications. Since you've mentioned that you've qualified NIFT entrance examination and that too with decent rank then I'm sure you've understood design technology and standard command over the mandatory language. Although students from Hindi medium might feel difficult at the starting, I'm sure it won't huddle your progress in the long run.

You should try to get mingle with students and share your thoughts and speak your mind out. In that way, you'll develop the habit of spoken English and won't feel shy around people. For written capability, you can practice writing every day. You can write about anything to everything, I'll suggest start off with daily activity. Try to read useful novels, that will help in vocabulary. One more thing, you shoud start watching english movies and it's  must do activity. Try watching with subtitle, in that way you can understand the context of the word used and can search for it's meaning in case of difficulty.

Just take it easy, you're awesome. Best wishes!

Hope, this will help. Do reach out in the comment section below if you need any help.

Cheers!