Hii there, 

Textile industries offer robots hardworking people so they hire either diploma or B. Sc students rather than B. Tech students. There is very less need for textile engineers in India. But the first salaries you might get ranges from 10-15k, if you need more salary then you must go from higher studies. You can prepare for GATE from best online websites like nptel

https://nptel.ac.in/

You have one more career opportunity that is you can learn fashion designing. Infact fashion designing is appreciated when you know all about fabrics that you had already learnt.

So the choice is yours. Have a bright future.

Good luck!