Moses didn't micromanage the fabrication of the Tabernacle. The men appointed for the purpose were divinely inspired experts, so he wisely left it in their hands, though he probably gave some guidance based on his experience on Mt Sinai. Ultimately, the final state of the Mishkan (Tabernacle) was Moses' responsibility alone. He was accountable and no one else. A great leader communicates clearly, delegates effectively, evaluates progress, corrects course when necessary, and doesn't redirect blame to others.
None-the-less, the precise construction of the articles of the Tabernacle was a miracle. The people did it exactly right. How often does anyone get anything exactly right in your experience?
Exodus 39:42-43 #leadership