Based on the answers provided, the model needs to make the following corrections to the 3D object:

1. The object should be redesigned to resemble an "L" shape. Currently, it appears as a "V" shape in one orientation and an inverted "V" in others. The model should ensure that the object consistently appears as an "L" shape from all orientations.

2. No changes are required in terms of the object's extrusion in one dimension as it already meets this criterion.

3. The size of the object is unclear from the images. However, as per the guidelines, no changes are required in this aspect.