Based on the answers provided, the following corrections need to be made to the 3D object:

1. Add a small rectangular rod pointing upwards from one of the corners of the rectangular surface. This is currently missing from the design.

2. Adjust the dimensions of the rectangle and the rod. The length of the rectangle should be approximately 1.5 times its width, and the height of the rod should be 3 times the length of the rectangle. The exact measurements are unclear from the images, so these proportions should be estimated.