Hi Hariharan,

What are your interests and passion? Think about it and pursue a course along that stream.

Engineering and Medicine aren't the only options. There are many more fields and a lot of scope too. If you are a bio student, you can go for courses like Agriculture, Fishery, Forestry, etc. 

If you are a computer science student, you have various options, including B.Sc., in Non-Medicine, etc. You can develop your skills further. Knowing computer programming becomes an asset nowadays. One year diplomas and degrees can also help you develop your skills.

Animation and graphics is also a deep field with abundance of scope. 

As I am not sure of the areas you are interested in, I am compelled to restrict offering much choices. 

Decide your passion and choose accordingly. 

All The Best.