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The following content will be helpful for you. In general Candidate Profile for Freshers for cabin crew is as under :
Age:Between 18 and 27 years
Minimum Height:Men - 170 cms and Women - 157 cms
Weight:In proportion to height
Educational Qualification:HSC (10 + 2). Candidates who are appearing for their HSC examinations can also apply
Physical features:Pleasing personality, clear complexion (scars, pimples and blemishes not acceptable) and good eyesight
Marital Status:Unmarried
Language skills:Fluency in English and Hindi. Proficiency in a foreign language will be an added advantage. Interactive skills:Excellent communication and good interpersonal skills
Nationality:Indian citizens only
Passport:Must possess a valid Indian passport or should have applied for a passport
Mandatory Documentation :Must possess a Pan Card and Aadhaar Card
So that becomes very clear that it merely requires some grooming to get the job of a cabin crew. They don't demand much from candidates. You should be interpersonal sound and capable to handle people from different cultures. Cabin crew is the face of the airline. Coz they face the passengers for the first time. Foreign languages like German, French, Russian, Arabic, Chinese and Japanese, Can allow you to get an edge over others. As this allows the airline to roster you on routes where such languages are spoken. For Cabin Crew Training
1. Flying Queen Air hostess Academy New Delhi
2. Wings Air Hostess and Hospitality Training Vadodara Gujarat
3. TMI Academy of Travel Tourism and Aviation Studies, Mumbai
4. Air Hostess Academy, Bangalore, Karnataka
5. Universal Aviation Academy, Chennai, Tamil Nadu.

B.Com is a Bachelor of commerce with knowledge of accounts and finance. After B.Com one can pursue a career in courses like Masters of Commerce followed by a Ph.D. in a particular subject or Master of Business Administration, Certified Public Accountant, actuarial Science, certified accounts course, banking sector, Chartered Financial Analyst, or Financial Risk Manager. Most students make the mistake of thinking about B.Com only when pursuing it. It would be best if you thought further. As the market is shifting, thousands of new jobs are being invented every five years. You will be behind if you do not know what to do after completing your B.Com. Moreover, you will often make the wrong decisions when you decide in haste. So, before you give your final exam, sit with yourself. Do some research! Think about the possible career options you can choose and which go with your career goals. If you need guidance, talk to your parents and take the help of your teachers and professors. At this point, you don't need to stick to one end. But you should at least consider your career after B.Com. Here are some of the good universities you can refer to pursue B.Com course:
Amity University
G D Goenka University
Geeta University, Panipat
IILM University, Gurugram
Ambedkar University.

NID and NIFT are the best for pursuing UG designing courses. The list of B. Des courses of NID and NIFT are given below. You can choose as per your interest. NID B. Des Courses: NID is offering B. Des courses in the following specializations.
1. Communication design: Film& Video Communication, Exhibition design, Animation film design & Graphic design
2. Industrial design: Ceramic and Glass Design, Furniture and Interior Design& Product design
3. Textile design
NIFT B. Des courses: Fashion Design, Leather Design, Accessory Design, Textile Design, Knitwear Design&Fashion Communication and B.FTech Apparel Production
B. Des in Graphic Design, Fashion Design &Furniture, and Interior Design are very popular courses.

As per your query, I would prefer either aeronautical or aerospace.
Aerospace engineering is concerned with designing and building aircraft and spacecraft. Aerospace engineering can be divided into two specializations: Aeronautical engineers handle design, manufacturing and maintenance of aircraft, helicopters & UAV etc. and astronautically engineers, who design spacecraft, rockets, satellites, and others. Aeronautical engineering was the original term for the field. Both, Aerospace Engineering and Aeronautical Engineers are niche branch of engineering with lot of similarities in syllabus with almost 90% overlap.
There are lots of good career opportunities on completion of Aeronautical/ Aerospace engineering. You can join DRDO/ ISRO/ Aviation manufacturing or its ancillary units/ Airlines/ Air Force/ Educational Institutes/ R&D Units / IT etc.
Even after B.Tech Electronics and communication , Mechanical and telecommunication programme you can opt M.Tech aerospace.