Can someone please help me with my golf swing?

im an ok golfer, i usually shoot around an 82.. but i just got new mizuno jpx 800 pro irons(custom fitted). The only problem i seem to be having is blocking the golf ball..i stay in balance on just about every golf shot..and i really try to throw my hips out top rotate the club..but i still end up blocking the shot..can someone please help me?