Learning multiple tradeskills?

So, resident bloody beginner at it again. I learned tailoring and heard spellcrafting allows you to imbue magical effects into your gear. My idea is of course craft my own fancy robes and imbue it. There's just a catch it appears.
The spellcrafters master npc just won't talk to me. What am I doing wrong? Is there a level restriction to learning a secondary trade skill?
The spellcrafters master npc just won't talk to me. What am I doing wrong? Is there a level restriction to learning a secondary trade skill?