Hello,

You have to upload the scanned image of the  signature done with black ink pen. You will be notified again to change the scanned image of the signature. If you do not receive any email or Phone number consider that your application has been accepted. The approval by the admin amay take time because of large number of candidates applying for NEET UG. There isn't specific period of time within which the uploaded images gets approved. Please check for the e-mails and SMS regularly.