When I post my link on FB an image always appears next to it but its not an image which I have taken its the Tripod logo from my theme. How do I change this on my wordpress so that my image appears instead of the tripod logo? Another issue I have had is when there is an update for my theme, I click on the link from my email where is says update and then it just takes me too the home screen of theme forest. Do I need to download the whole theme again every time its updated? Once when I tried doing, it said the file size was too large so could upload it?