Well Done in your test, i didn't give you much chance in the 1st and 3rd game, but when you got the opportunity in the 2nd game you was able to take it.
Deck wise try to keep it to 40-42 cards, i was able to control because i had 41 cards and draw power, with this format as fast as it is, something you might need to consider.
Taking all things into consideration, you are being placed in Slifer the sky dragon. Keep an eye on the classroom, Articles and pro deck-lists to help you improve. Feel free to post your slifer dorm when you wish.
- Seto Kaiba.