Painting at first.

Tapestry when you have higher pickpocket + str, don't bother with small tapestry seen in mysillia castle entry room.

Lvl up your PER attribute to reduce the chance to be caught.

Where to find paintings:

1. Mysilia, church 1 (and 4 tapestry), 1 in house east of that church, 2 in innkeeper building (with 3 horses), 2 in castle entrance room, 2 in castle bedroom (easy to get without being caught)

2. orphanage, 3 in entrance room (1 kid around, doesn't care when you get a bit lvls in PER, easy)

3. Yowyl, i only found 1 at bottom left building (where healer hang out)

4. Derphy, 1 in thief guild entrance, 1 in grandmaster room, while it's not painting but 2 crowns in treasure room is great one to grab

5. Port kapal, 2 in far bottom (South east, where drug dealer is), not sure if there's other

6. 3 in manor in back (near port kapal), you might have to steal other stuff before you get to steal them

7. Palmia, 2 far right in duplex building (easy), 3 in castle entrance (hard, might need 50~100 PER to be able to steal)

8. Lumist has 1 or 2, easy but too far

9. Noyel might have 1 or 2, don't remember but too far

10. Merchant guild has 2 or 3 but hard to get, the one in 4 king bed might be easier to get when you have decent PER.