Have you considered doing this for a living?
Maybe don't quit your day job right away, but seriously, look into it. Just show it to somebody and say "By the way, I did that in a week. By myself." When I read the description I was expecting a quality of much lower calibur. Low expectations+Amazing talent=Blown away a little bit. The red-black contrast you had was done well. A lot of people tend to focus too heavily on the black, making it harder on the eyes, but you've just about got it.
By the way; did you win that contest? If you didn't, someone needs to be slapped.