There is nothing special and hard in passport control procedure. You just need to be courteous, attentive, serious and don't ask a lot of questions.
Also you need to find the correct rack passport control. Racks can be divided into residents of the country and foreign nationals. Try not to mix them up. Be attentive.
Also you should always stay in queue. While a forward passenger submits the documents, you must stand behind the red line. Sometimes the employee can ask you a couple of questions: “What is the aim of your journey?” or “Where are you from?” and etc. Don’t lie and always tell the truth.
Passport control won't be a problem for you If you did not have problems with the law earlier.