At the top of the page where it says Welcome" and then your name.....right below that it should say "My Mood: Change Mood". Click on "change mood" and a drop down of different moods should appear. You can select whichever mood you'd like from that list.

To make a photo your avatar you have to go to User CP and click on "edit avatar". I'm going to have to ask one of the other Mods to help you with this part. I know how to do it....it's just explaining to someone else how to do it is where I get confused! I'll ask someone else to explain it.......or if someone else here on the forum can do it that'd be great!