Linen creases naturally - that is a property of the fabric, not a flaw. The wrinkles soften the longer you wear it and become less noticeable as the fabric settles against the body. If you prefer a crisper look, a light steam will smooth it out.
Linen wrinkles naturally, especially with wear and washing. This is part of how the fabric behaves, not a quality issue. A damp press cloth and a warm iron will smooth it if you prefer a neater finish, but many customers wear it relaxed without pressing.
The fit is intentionally boxy and relaxed. Most customers find their usual size works well. If you prefer a more fitted look, you could size down. Petite customers have noted the width runs generous — check the size chart for chest measurements.
It's a single small button at the back of the neckline. It makes getting the top on and off straightforward and keeps the back neckline flat and neat. It does not affect how the top looks from the front.
The top hits at the hip. At 5'4", customers describe it as landing just below the hip bone. At 5'7", it still provides good coverage. Side slits at the hem add a small amount of ease without shortening the overall length.