hey mangesss how u been? wish u loads of luck for the interview ...hope u are goin with your wife for the interview ..
its very simple take a folder and according to every month keep all your proof ready and tag them all monthly
for eg- jan( tag all the phone calls Skype emails pics etc all together) it will make it easier for the officer to know every month how much u guys have been in communication and your relationship is genuine ...they will definitely ask u abt age difference so be prepared to answer that question very well.......or best ask someone in 2012 whos already gone for an interview im sure they will be able to help in this situation.........will pray for u dear...wish u both all the good luck ...give us good news very soon