Use any photo you've taken with the camera as the lock screen wallpaper. 
	 
 
  
 
	 -  
		  From the 
				Home screen, tap 
				. 
			  
		
-  
		  Under 
			 Themes, tap 
			 Change or edit theme. 
		   
		
-  
		  Tap 
			 . 
		   
		
- Slide to the Lock screen thumbnail, tap Change wallpaper, and then choose a source for your wallpaper. 
- Tap . 
- Enter a title for the theme, ensure the Apply this theme now option is selected. Then tap OK.