A very charming puzzle game! it took me a while to figure out that you need to click on someone with an object to talk about it, and as mentioned by others the item combining system would be better as drag and drop.
the font you're using doesn't have certain characters, which shows up in the names of the painters, once dave has left, you can still click on his chair and he talks to you, the guy at the flower shop still recognizes you if you're in disguise. the puzzles were mostly pretty good, and i loved the story. :)