Forum:How do i add/edit correctly

Each time i try i do something stupid.

I never edited any kind of wiki before and i thought it would be quite simple, but it is not(well not to me)

I added stats for the WTF orange shield and a picture but each time i add a picture or its link it screws up

http://borderlands.wikia.com/wiki/Whisky_Tango_Foxtrot/Variant_Chart

Thank you well in advance.