I have so many questions on how 'creation' magic works, we're shown so far that a great deal of importance is put into detail, which in turn requires you to know what your making and how to make it.
The common people don't have even a general education so won't know much about the structure of things or how magic works and if only nobles go to test for magic compatibility than they will definitely not know such commoner things like blacksmithing or pottery or building, etc.
How much magic is wasted when trying to create something with no detail, knowledge or if missing material, if you don't have enough material does the magic energy try to convert itself into material at a terrible efficiency there by 'consuming a lot of mana'?
Is it the magic that consumes so much mana or the improper use of the magic? would a blacksmith with 'creation' magic be far superior to a blacksmith without?