We think there might need to be an added clarification that leaving your candles lit isn't always a good idea - just to make it clear candles naturally burn out. And you might have to be cautious that you have a decent enough GM to balance character screen-time, because it might be a little unfair if some of your candles burn mostly out just because another player is taking a lot of time in a scene, and you didn't have chance to take a moment to relax. Just some initial thoughts!
Other than that, it seems absolutely awesome. Fabulous ideas on mechanics and sparking player interaction as gameplay. Definitely a game both of us are going to playtest when we can get our hands on some candles!