Children’s book published I believe in the late 80s early to mid 90s. It was a large paperback picture book. The illustrations were incredibly complex and rich and painterly. It was based in the woods and the surrounding areas. And was I think, through the perspective of a little creature like a mouse. Everything was small but five perspective looked big if that makes sense. So like a little beetle would be the size of a dog kind of thing. There was a scene in a clearing in the woods. There was a little house on a tiny pond with a boat that went to it. And there was a scene in a meadow at night. Each scene would cover the entire two pages that you saw. And for every scene there would be a key off to the side with a list of all of the items that you were supposed to help the main character find. They would have magical properties but they were all things that existed in real nature like deadly nightshade, cobwebs ( not all like scary stuff but those are the two things I can’t remember).
illustrations were super intricate and all of the little items were hidden but not like hidden blueberry was a dogs eye or something, hidden in this really great way that seemed very real and also very hard to find the item so it was actually challenging to search which made it so fun. It was absolutely beautiful and so immersive for a little person’s imagination.