Rate my Yu-Gi-Oh beginners deck?

On a scale of 1 to 10, (10 being the highest) I'd give you're deck 6.7/10. There is room for improvement, but with the cards you have (the additional ones) I'd say there not it. Maybeinstead of Ookazi, you could have De-Synchro, but otherwise there isn't much you can do. Still you do have a pretty solid deck.