To edit your profile, click on the circle on the far right of the top navigation. This circle should have your initials. Within the drop-down, you will see the option to "Edit My Profile."
When editing your profile, you can change your account details, edit your profile picture, and update your password.
When editing your profile picture, please make sure to use a .jpg or .png.
Once you're done updating your profile, click "Save" before leaving the page.