Well i see no one has talked you through the app process - or mentioned the avatar requirement...so hello and here it is in summary
You get to put in an app and while its running we get to find out if we like you while sneakily you decide if you like us. If we do and you get 4 YES votes then you are in, and can hope from branch to branch easily. If however we get 3 NO votes, usually from inactivity or too much drama, we go our separate ways.
We like avatars as it helps to personalise the application and acts as a visual reminder of who is who; we will also apply cod psychology to it. So get an avatar, you wont get a YES vote from me til you do.
Finally embedding photos is easy, use the insert image icon in the bar above the message.