step 1: Near the entrance/exit door, tell the officer on duty that you are applying for a visa. Get a queue number. Write your name, and the type of visa that you are going to apply for on the visa application list.
I case that you still don't have a completely filled up visa application form, kindly ask the officer to give you one.
step 2: Fill up the application form. Avoid erasures.
If you are not sure on how to answer something, you can ask for help from the officers/security guards. They know what exactly what you should do. :) and they are very friendly too(based on my experience).
step 3: Arrange the required documents according to the list.
If you don't arrange the documents properly on how it was listed, the Korean embassy officer will not accept your application and return your documents to you and ask you to arrange it. Though it didn't happen to me, I think it's quite embarrassing because the Korean officers are not quite nice. They will not wait for you because they are always in a hurry. I understand them because they have to finish all the applications before lunch time.
step 4: Wait for your number to be flashed on the Visa counter monitor.
step 5: Once your number is flashed on the monitor, proceed to the Visa counter where it is flashed.
step 6: Submit all your requirements.
The receiving officer will check all your documents and ask you some few questions. Don't worry about the questions. Most of the questions are just about the application form. They will just verify your answers.
If you are applying for a spouse visa, they may also ask you on how you meet your husband, did you meet through an agency, etc. Just be honest in answering these questions and answer in simple English. :)
step 7: Pay the Visa fee.
step 8: Get your visa issuance schedule slip.
A piece of paper will be given to you about when you can get your visa and passport.
And you are done! :)
If you have no problems with your documents and you go to the embassy early, you could finish the application within 1 hour.