How do I tell if a Louis Vuitton wallet is authentic?

WAYS TO TELL IF YOUR BAG IS A CHEAP LOUIS VUITTON FAKE! 

HOW TO TELL IF YOUR BAG IS A CHEAP FAKE: 

1. IT HAS A TAN OR BROWN SUEDE INTERIOR 

2. IT'S TAG IS ON A PIECE OF STRING WITH A LITTLE WHITE PLASTIC CIRCLE
THAT HAS A BROWN LV ON IT

3. THE LOGOS ARE NOT A CARAMEL BROWN COLOR BUT MORE OF A STRANGE GREEN COLOR 

4. THE LOGOS ARE CUT 

5. THE TRIM IS NOT LEATHER BUT PVC 

6 . THE ZIPPER IS NOT A YKK ZIPPER 

7. THE STYLE IS TOTALLY MADE UP AND NOT MADE BY LOUIS VUITTON 

8. THE SHAPE IS CROOKED OR LOPSIDED

The site below tells:
There are now "Super Fakes" that make it nearly impossible to judge
authenticity without having Louis Vuitton's experts look at the item.
http://www.mypoupette.com/faq1.htm

This is also a good guide on how to tell fakes:
http://www.hisremnant.org/Vuitton/fakes1.html