Okay! I’ve re-created the scene so I can demonstrate my suggestion. Here’s my recreation:
KeyRange.blend (190.4 KB)
The first thing I notice is that there’s no background, and no foreground.
The two keys I’ve selected are hogging the background, so we’ll need to deal with that. I’d add a cutout to the one on the left to reduce the impact on the scene.
The next thing I would do is lay the keys over a bit, this helps to open up the background a bit and also give a sense of sloped mountains.
There’s not much background either, so let’s give some of those keys a white paintjob and cluster them in the sky as clouds. We could make some of them green and turn them into trees (might want to make the round handle larger) and a grassy field in the foreground. Here’s the resulting composition, minus the character:
After that, I would add a lot more atmospheric haze to give a sense of scale. Maybe make the sun in the background a key as well, with an emissive material?