Honestly, the more I see it, the more I love it~ And while it's not what I'm used to, it's good to stray from the ordinary.
I really enjoy his expression and the book in his hands as he chooses the right ingredient. It's almost as if he knows what to choose, but is considering using a different ingredient in the potion instead. He looks tired and worn from a longs days work, but he still continues to tax his mind and his resources for the potion to be.
While I'm not quite certain what use an Alchemist has for a crystal ball, it adds to the studious, yet magical, atmosphere I hoped you would create.