Welcome
On the far left of the purple bar at the top click on "User CP". Then, on the left towards the top click on "Edit Avatar". Once there you can upload a picture for your av.
As for the weightloss tickers, you will have to wait 20 days and create 20 posts and then you can make one. You can find more info here:
http://www.3fatchicks.com/forum/anno...questions.html