How do you spot a fake louis vuitton bag?

me and my mom are trying to sell bags on ebay and we want to see if theyre fake first
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Look at how much refelction it gets from light, if the bag gets too bright, theres a good sign its fake. Feel it if you can or feel for thick it is.
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Here are a couple of links. Check out the first one for some easy tips.

http://blondebloggings.blogspot.com/2009…



If you are still unsure then go to the second one to have your bag authenticate (you just need a few pics of them).



http://www.effenhaute.com/forum/yaf_post…



Fakes can be good so make sure you get them autheticated so ebay doesn't pull them off =)