Hello,

You can only change the photo if you have received a mail asking you to change it.If your application is upto the mark then you do not need to change.But what you have received is a confirmation email for successfully submitting the online application form.Your passport size photo must have your name and date and there must be 80% face coverage with ears visible on white background.So wait until you receive a mail regarding the application acceptance.If there are any discrepancies in uploaded files you can correct them when correction window is available.