Perspective is how one draws backgrounds. It's kind of difficult to translate, I suppose. It's actually quite difficult to define as well! If you look up a tutorial on it, you'll understand. I was just saying that you might want to study it a little.
Poor Sirius. He has to listen about slytherin, blood, Voldemort and all those NOT nice things all the time. Yeah, doesn't matter I love your Sirius, as usual his face is like " can you talk about something else, peeeeeeeeese? that's boring!!!!"