Table manners

Today my uncle went out for a meeting, so just my cousin and I had dinner together. While having dinner, I was a little upset, seeing my cousin eating. My cousin made noise, smacking his lips and hogging down the food at the table. He seemed to be in the habit of making noise at the table. I really didn't like the noise. So I told him about table manners. It was as follows. There are several things we have to keep in mind at the table. Firs of all, we had better not make any noise while eating or drinking. Another is that we had better not burp and blow our nose which are considered very rude at the table in Korea.
I asked him not to do those things and to observe etiquette when eating from now on. He said that he would try to change his habits.