We have been through this couple of times. We understand that it must be scary but NTA has its own guidelines. Unless NTA thinks that the images uploaded need to be corrected, you cannot make any corrections because you think a better image can be uploaded. NTA has a final call on it. So please wait to hear from NTA. If it notifies you to correct the images, only then you can. Or else, the images you have uploaded, will remain there.

You will be able to edit/ re-upload your thumb impression and passport sized photo only if NTA sends you a notification/ mail.

If NTA does not send you any notification regarding editing of photo/ thumb impression, it directly implies that the images are sufficiently clear and meets the NTA guidelines, so no need to edit images in that case.