Communication Design

According to my experience there are lots of career scope in animation and VFX field. Animation and VFX is biggest part of Media and Entertainment industry.
Accordingly FICCI report, Media and Entertainment Industry is highly growth field right now.
The Federation of Indian Chambers of Commerce and Industry (FICCI) is an association of business organizations in India.
The media and entertainment industry in India consists of many different segments under it's folds, such as television, print, and films, radio, music, OOH, animation, gaming and visual effects (VFX) and Internet advertising. You can work all these segments.
In these segments, you need just understanding of software skill, tools of the industry no further requirement is needed.
As per the combined survey report by KMPG and FICCI, the entertainment industry in India is expected to expand by 12.5% every year and is likely to reach US$20.09 billion by the year 2013.
The industry is estimated to achieve growth of 13 per cent in 2011 to touch US$16.2 billion. As the industry braces for exciting times ahead, the sector is projected to grow at a CAGR of 19 percent 2020 which is highest growth as compare to other fields that mean more income and jobs.
In MNCs like Pixar, Technicolour (Bangalore), Rythm and Hues (Hyderabad), Red chilies, Prime Focus, DQ entertainment etc. salaries are more than software engineers.
If you are interested in this field, so you can just join a professional career based course in best institute no degree is required in this field, because I have already mentioned that Animation and VFX depends on creativity and software skills.
For more information please visit:
https://www.shiksha.com/Maya-Academy-Of-Advanced-Cinematics-Chandigarh-institute-college-listingoverviewtab-37864
http://indianexpress.com/article/entertainment/entertainment-others/indias-animation-industry-has-seen-unprecedented-growth-avneet-kaur/
http://www.animationxpress.com/index.php/latest-news/animation-and-vfx-industry-to-grow-by-8-5-per-cent-and-18-5-per-cent-respectively-by-2020-ficci-kpmg-report

For (Design Aptitude Test), there isn't much that you can do. Firstly, and most importantly, you should have an aptitude for design. NID papers are designed in such a way that only those who have a creative side will be able to clear it. The question paper is a mix of creativity, logical thinking and general knowledge. You need to be aware of the latest happenings in the world. Cramming up yearbooks won't help you, seriously. Instead make a habit of reading the newspaper every day.
After clearing that, you'll have to prepare for the studio test and the personal interview. The studio test judges you on your material handling and of course creativity. You could be provided any material, like clay, terracotta, cardboard anything and from a set of themes, you may have to design something of your choice. Since it is time bound, you have to be real quick and efficiently use the materials provided to you.
The personal interview is where the faculty evaluates you in person. They may ask you about your hobbies, interests and even talent. They may even ask you to sing if you're a singer. If you have a history of artwork, you get to showcase it to them. Whatever you have done till now, be it a random sketch or doodle, bring it along. But make sure it's your own work otherwise you may get caught and it's not that difficult for them to do so. Make sure that your portfolio stands out. It should speak for you and define you. Don't try to include or steal somebody else's ideas. Be unique and come up with something from your side. Follow your instinct.
For all this, you can join some coaching institute which will help you ENHANCE your creative side. There are a lot of coaching institutes like BRDS, Skyblue, Silica, Pahal Design and the list goes on. But I would suggest you go ahead with BRDS because they have the maximum selections every year and also the material provided by them is good. Even if you don't wish to join any coaching institute, that's okay. I have friends who have cleared NID without joining any coaching and who even after joining such institutes haven't cleared any of the design entrances.
Lastly, don't stress about the exam much! Stress makes you think less creatively and that is something you wouldn't want to happen on the day of exam. For the interview, don't worry at all. Be confident and be yourself.