Arshiya, if you haven't still utillised the correction window, you still have a chance. Login to the NEET application form with your credentials and under the images section, you will see "Edit" button. Click on it and upload the correct images. Save the changes and enter the OTP that is sent to your Mobile number. Take a print out of the confirmation and keep it for future references. But if you already have utilised the correction window once, even then please check if you are able to make any changes to the application form. Do not delay as today is the last day for making changes to the application form.