When there are statements or sections which are unclear, it would be hard to understand or determine the statement. If ever you don't understand, you must clear it out. To clarify, one must ask questions such as to elaborate the point, or ask to express it in another way, or ask for examples.
You might not have enough time to complete the costume and it may look a little sloppy. Also, if you are in a play, everyone must be notified of the change.