Auto-learn level could depend on your skill & intelligence derived value. High intelligence characters would auto-learn easier.
Lets put following modifiers for the “difficulty of creativity”:
+2 for INT 1-3
+1 for INT 4-6
0 for INT 7-9
-1 for each even point of INT over 9
Then have some constant like 5 for the normal gap between auto-learn and skill required to make some item.
So - we have character with intelligence 11, tailoring at skill 6. He would auto-learn all recipies that require 6-(5-1)=2 - he would auto-learn all recipies that require tailoring(2).
We have another character who is dumb with intelligence 3, he has also tailoring skill of 6. He would auto-learn 6-(5+2)=-1 … Nope. He wont auto-learn anything until he gets skill level 7.
We have yet another character who chugged mutagen and has bulging cranium and INT of 24. He would auto-learn 6-(5-7)=8 … all recipies with tailoring requirement of 8 - even before he can actually manufacture them.