1. You can layer the batter as per convenience. I just layered it one on top of the other as I didn't have any patience!
2. The sugar was just enough, not too high and not too low. If you need more, add more.
3. You may add chocochips and nuts to the recipe. I actually wanted to put some chocochips before layering the batter but I conveniently forgot!!!
4. Even though the original recipe says that the batter wont rise much, my cake rose to almost double!