A strong chignon starts before the first pin. The most important part is preparing the hair so it has enough grip, shape and movement without becoming heavy.
Begin with clean sectioning. Separate the front detail, crown volume and lower base before building the shape. This gives you control and prevents the style from collapsing later.
For beginners, the goal is not to create the most complicated updo. The goal is to create a balanced shape that looks beautiful from the front, side and back.
Use pins with intention. Cross them where support is needed, hide them inside the structure and keep checking the silhouette as you work.