Hello Aspirant.......hope you're doing good.

Well, as long as it's your own photograph in the admit card, you can adjust it as it has been printed in the document. But if it's a wrong photo or somebody's else photograph, you must immediately contact to the help desk support at online portal and they will tell you the further proceedings. Otherwise your candidature may be rejected at the time of counseling or admission or you may not be allowed to give the exam. 

Hope this helps you out......

Best of luck:)