In the Update User Account area you are able to delete and upload a new picture of yourself by using the Upload Image.
There are no guarantees, however it can take from a couple of days to a month to find a place.
If you want to find a place, be more social, yChatter unlike any other website or mobile application gives you the power to reach out and contact people who offer rental properties. Send them messages, request viewings when you are interested, and decide what is the right place and whether you and the landlord share similarities and will get along well.
yChatter now has a UK Flatshare and AUS House Share site to allow you to check out some of the listings before you sign up. PS yChatter is completely Free.