Yep:- work hard do everything right. When you do make an error be open to learning how to avoid making that error again. Positive smiley people are more than welcome in the work place too so don't be afraid to smile--it's free:)
Tell them you are interested in a Perm position because of how great your experience has been and how fantastic the people are and the company itself is awesome(get my drift)
You may find that despite your best efforts the Perm position is not an option and never was either to you or someone else.
That's just the way the world rolls!