B.Com

After the graduation, one can opt for any post-graduation course in designing. There are several courses related to the design field like fashion designing, textile designing, product designing, and jewellery designing. Visit the link get all the information related to jewellery designing course:
http://www.igiworldwide.com/jewelry_design_course.html

Generally, you need to be a graduate to get a good job, but you can opt for Diploma in wealth management or computer software to get a job in the first semester of B.Com.

Hi
There are many courses after B.com. You should opt for the course in which you have interest. You can pursue certification courses like Tally, ERP, Taxation Course, cost accounting, and corporate accounting. These courses belong to commerce field. If you want to pursue an animation field, then opt for some Diploma course.

You are not eligible for appearing in CAT and SNAP examination if you are a general candidate.

You can go for Masters in mass communication from IIMC or a PG diploma is also possible. Take a look at the following link:
https://media.shiksha.com/ma-mass-communication-colleges-in-india-categorypage-7-18-440-0-0-1-1-2-none-1-0

Yes, you can get admission for in B.Com but no for B.Com Honors.

Yes, you can, but you will have to abide by their rules and regulations.