A useful trial does more than show whether you like the hairstyle immediately after it is finished. Wear the relevant earrings, try the outer layer and sit in a normal chair. Turn, talk and look down. Notice which areas demand attention and whether a fastener becomes uncomfortable. Record the changes you want in plain language, such as less hair beside the left earring or a lower profile at the back. These notes are easier to act on than a general request to make the style better.
Photograph the arrangement after some ordinary movement as well as at the start. The later view helps you judge whether the style changes in a way you enjoy. If the occasion involves a coordinated group, agree on the shared details before the day and let individual versions be adapted to each person's hair. Matching the level of formality or accessory finish can provide a connection without requiring every cut and texture to produce the same shape.