Your account information can be viewed on the settings pages. By clicking the cog in the bottom left-hand corner of the screen, you will be taken there.
Your account details will be in the tab "Account", which by default is the first tab in settings.
Clicking "Edit Account Details" allows you to make any necessary changes to your account information.
While editing your account details, by clicking on the account image (or grey circle if there is no image) to the right of "Account Details", you can upload a new account image.
