Degree

Hi Sowmiya!
It is up to you whether you want to be a costume designer or get into research field. You can start your career now and look for a job if your interest lies with core costume designing industry. If you wish to enhance your knowledge base, become a lecturer in design, pursue M.Phil or get into research field, pursuing M.Sc will make sense.

The four verticals you have mentioned are basically part of two job types. PR and Anchoring can be seen as one and Writing and Travel (as Travel blogging) can be seen as another. I shall suggest that You can even club them together. Seeing your interests, I shall suggest not. News Channel rather some Magazine or Print Media. You can also go into PR.

It would be better to do this from India itself. We have colleges offering BBA at less fees.

Many universities conduct their own entrance exam also to fill the rest seats. But I am not sure that you will get admission because of your UG degree.

In Canada, with tuition fee and living cost, it will be 6,571 Canadian dollars and if you convert it into Indian rupees 420,544 which means around 5 lakhs.