NIFT

There is no age bar for applying to the Masters Programmes in NIFT.
Eligibility for Masters Programmes Design, Management and Technology
Design: M.Des (Master of Design)
Candidates must have successfully completed any of the following:
Undergraduate Degree in any discipline from any Institute / University recognized by law in India or
Undergraduate Diploma of minimum three years duration from NIFT / NID.
Note: Master of Design (M.Des.) is an advanced course that demands an understanding of fundamentals in design and presupposes that candidates would be familiar with the basic skills and theories for successful completion of the programme. The course would not provide any basic knowledge and skill development in design as a part of its Master programme.
Management: M.F.M (Master of Fashion Management)
Candidates must have successfully completed any of the following:
Undergraduate Degree in any discipline from any Institute / University recognized by law in India
Undergraduate Diploma of minimum three years duration from NIFT / NID
Technology: M.F.Tech. (Master of Fashion Technology)
Candidates must have successfully completed any of the following:
B.F.Tech. from NIFT
B.E / B.Tech. from any Institute / University recognized by law in India.
IMPORTANT NOTE
Candidates appearing in the qualifying examination in 2018 are also eligible to apply. They will be required to produce proof of having acquired necessary qualifications by the time of counselling or admission. For details please see the prospectus.
RESERVATION OF SEATS
The seats reserved for various categories in each programme are as under:
Scheduled Castes 15%
Scheduled Tribes 7.5%
Other Backward Communities (non creamy) 27%
Persons with Disability (PWD) 5% (horizontal reservation cutting across categories)
Foreign Nationals/ SAARC/NRI 15% (supernumerary)
State Domiciles 20% (supernumerary)
The qualifying candidates need to meet the eligibility and admission requirements of NIFT.
Details of seats available category wise can be seen in the Prospectus. Campus and programme will be allotted on rotation, at NIFTs discretion.

Yes, why not.
NIFT eligibility criteria 2019 for B.Des (Fashion Design/Leather Design/Accessory Design/Textile Design/Knitwear Design/Fashion Communication)
Class 12 exam from any recognized Central/State Board of Secondary Examination, such as Central Board of Secondary Education/State Board New Delhi, and Council for Indian School of Certificate Examination, New Delhi or any Public School/Board/University Examination in India or in foreign countries that is recognized by the Association of Indian Universities as equivalent to 10+2 system or General Certificate Education (GCE) Examination (London/Cambridge/Sri Lanka) at the Advanced (A) level/International Baccalaureate (IB) or a pass grade in the Senior Secondary School Examination held by the National Open School with at least five subjects or 3 or 4-years diploma recognized by AICTE or a State Board of Technical Education.

Firstly, you need to keep an eye on the application dates. Make sure you apply on time. Read up on the admission process and start preparing accordingly. https://www.nift.ac.in/sites/default/files/2017-11/Guidelines.pdf
Here are a few tips for that-
Hi, There are two part to the first level entrance test- Creative Ability Test CAT and General Ability Test (GAT). CAT is the most important part of the question paper. Start sketching and develop your own style of sketching and coloring. I can not stress this enough. Good drawing skills are very important. How you present/draw your ideas is just as important as the idea itself. Keep reading the newspaper (especially around November-December) It'll help you in GK part of GAT and help you generate better ideas. Most questions in CAT are related to current scenarios. For example- Make in India was started in late 2014 and in the 2015 entrances Hi had asked the students to make a mascot and a poster to promote the same. Based on the happenings and big stories in the media, plan and create small sketches. This was you'll save time on thinking during the actual exams. Go through various artists on social medias, movies, art galleries etc. To find inspiration. Go through question papers from the previous years and see what kind of questions they ask. Start solving these question papers in the given time and work on pacing yourself. For that, you can pick up any reference book. Math, logic and English are mostly what you've learned in school but it's better to revise. Keep solving the previous question papers so you can get into the habit of thinking along those lines. You can pick up any test series or books from Arihant publication. They usually have a summary of the portion. Check out other artist's work on Instagram, Interest, Behance, etc. So that you can improve your drawing skill and understand what the rest of the world is doing.