Based on the answers provided, here are the corrections needed for the 3D object:

1. Modify the object to be a rectangular prism. This means all sides should be perpendicular to each other, and there should be no slanted sides.
2. Ensure the object's dimensions are clear and consistent across all images. This will help in determining whether the object is taller than it is wide, and whether it is longer than it is tall. The object's orientation should be consistent in all images to avoid confusion. 

Please note that the object is already narrower than it is long, so no changes are needed in this aspect.