Help! How do you eat a croissant sandwich with a knife and fork elegantly?

Shanghai, sunny Go to Crave on Xinhua Road for a sandwich Probably the best-looking restaurant in the area I could sit there from morning until sunset Steak sandwich with croissant The heated croissant is very crispy But they gave me a knife and fork, how do I use them To look elegant, waiting online, it's urgent❗️ Also, the cinnamon roll is super delicious