Pretty Good.Still missing the "Sell" function,but it doesn't have a great impact on gameplay.My suggestions to make it more interesting:
1-New locations or Expanding the guild,getting new members and that sort of thing.
2-An Arcade Option would be great.Creating your own Guild and hiring painters that doesn't even need to exist,but making real artists to be like some kind of "Rare Acquisition" or "Rare members".It could have some kind of Achivements that unlocks famous artists.
 "Painters Guild (Alpha)"){kind=icon}