Upakul, you cannot make any edits in the uploaded images unless notified by NTA to do so. Even if your ears are not clearly visible in the photograph but your face is clear, you are good to go if NTA does not notify you to make changes.

Also you do not require sign with the photo. There is another field for uploading your signature. Although you are required to have the date on which the picture was taken on the photograph.

The correction window is open till 31 January 2020. Please be alert for any communication via SMS and email on your registered mobile number and email address. If you do not receive any such notification, you can be assured that the images you uploaded have been approved and are correct according to the guidelines.