Get the Right Shirt
First, find a shirt that is the right fit. What do I mean by that? Make sure it’s not too tight or way too loose. Here’s how to figure that out: Make sure that it is a top that you can wear the usual way. In other words, can you button it up. You want to have some fabric to be able to button it up.
You want to make sure it fits in the shoulder area. Also, that you can button it. If the shirt is more of a “blousey” fit (like a silk or linen shirt), you shouldn’t be swimming in it. Otherwise, it won’t create a structured silhouette.