Yes, you can go for diploma or certifcation course along with your BBA. Also, to know the scope of graphic designing you can go through the below points -

There is a lot that the Indian media requires and talented graphic designers are amongst the most important people. There is a wide variety of graphic designers, art workers, design consultants design management professionals, creative directors required. One can also work at a magazine as layout editors in reputed media organizations. Moreover one can also pursue career as a graphic designer in advertising agencies, marketing firms, design studios, educational institutes, exhibits and displays, publishers and manufacturers. As per industry standards, the monthly salary of a graphic designer initially could go up to Rs 15,000-20,000. With experience and a superior publishing company you might get about 40,000 a month. As you keep climbing the ladder you will see lot of opportunity coming your way other than your regular job, from which you can make lot of money.

Hope this helps!!!

Character Designers combine the tasks of a game designer, illustrator and animator into one role. You require a bachelor’s degree in animation, art, graphic design and related fields. A Character designers typically work in a studio or office for animation studios, video game companies, motion picture and similar industries. A good number of them are also self-employed.

Most important are artistic ability and solid skills in 2-D illustration and 3-D modeling and also should be well-versed in the use of Maya, 3ds Max, Mudbox, Zbrush, and Photoshop.

So all these thing are there you need to become a successful Charactor Artist.

Good Luck!

The scope of animation is huge all over the world. But in India, well, the future is vast, bright & the market is in dire need of good animators. Here, the Animation industry is still at a budding stage though in recent times.
Day by day the need of a shade of the fantasy world will definitely be felt more, and the scope of creating a niche for oneself in the industry will be brighter as well. So it is a good option to opt if you have the interest.

If you have the interest in Sketching comic characters then there are many certificate & diploma animation courses you can apply for that as per your interest. Some Short term courses are -

Editing/VFX

Design

CAD Design

Web Design

3D Animation

Yes, you can apply for Graphic design after BCA.