I think the issue is that everything is lovely but all the same height. I would add a plant on the left, either real or fake, perhaps hanging down. Grouping things in threes rather than one by one would help. Books are incredible and always look good so well done there. Here’s some pics to guide you.

First of all i think you might need some book ends , which add a nice decoration to your shelves and at the same time they are useful to protect the books from falling. second thing you need to add some plants maybe try falling plants they look really nice in shelves. Finally, try to follow the triangle law for arranging the shelves that helps alot in developing the overall look of the shelves.

Thanks so much for the feedback and inspiration! Will need to google the triangle law - let me look in it.

Made a few updates- still a work in progress but I think it’s looking better!

Made a few updates. It’s still a WIP but it’s looking better. Any additional suggestions or tips are welcome