If possible, place Receiving notes directly under the "Receiving Settings" section.
Reasoning: When an item is being checked in and there is something in the Receiving Notes it usually has something to do with the way that title is checked in. Where it is located now, the check-in process has already been started and even possible received/entered incorrectly.
Rebecca Bearden commented
In the new UI, the location of the receiving note is up in the far right and is very easy to not notice. Even if it stays where its located, making it a bright color, or treating it like a pop up notice like routing and binding if something is written in it would help bring attention to it during the receiving process!