Your cake looks delicious! I always say that you should have a lot more practice than the homework asked for! It is evident that you are not among those who are looking for someone to do your homework for you.
I know that when I'm trying to make a cake, a lot of people tell me not to worry about getting it perfect but for me, it is one of the most important pieces of the party. The cake is what people see first, so if it doesn't look good then no one will want to eat it.