How would I keep the same facial expression while walking down the runway?

Im going to be doing high fashion modeling i can do the walk, and everything but i cant keep the same facial expression all the time. Well I could but I just need to know how. Any tips please?|||i think you have to focus on one center object when walking


one bland boring object that can%26#039;t give you a different facial expression


when you go out, pick a facial expression and focus on one thing that can get you zoned into keeping that expression


or you can try practicing in the mirror, try holding the expression for as long as you can|||fis your eyes on a sighn or somethink and while your walking dont take your eyes of the sighn try just be normal