We strongly advise against altering the order of the rounds. The only reason is we have tested all the possible configurations and it works best with the following.
Round 1 - Describing what's on the card (no limits to what you can or can't say),
Round 2 - Using characters or the people who played/voiced them, and
Round 3 - One word can be used. Mess that word up, and thats round over for you.