After completing your CA course, you can start your own CA firm or join someone's to increase your practical experiences.
A Cost accounting course is limited to the study of processes like tracking, recording and analyzing costs of the respected products. Cost accounting does not follow generally accepted accounting principles. Costs are measured in units of currency by convention.
Hope it helps you in any way. Good luck for whatever course you will select for you.
"Your value does not decrease based on someone's inability to see your worth"