How to speak German....

I and my groupmates created a script for a play, and I'm supposed to be German. I researched a bit and found out that:
1) "d" is "t"
2) "th" is either "t" (for a sharp "th") or "z" (for a soft "th").
3) "w" is "v"
4) "v" is "f"
5) speak deep in the throat and your "d's" and "r's" will take care of themselves.
I'm finding that it's not that hard after all! ^_^