Your gallery do not necessarily needs to display all folders that it contains, Most will agree with me that there are some folders you do not want showing up in your gallery because it makes it look messy while you do not want some to show up because they are private folders you do not want anybody who visit your gallery to see. With this tricks, you will be able to stop any album folder from showing up in your gallery. In this tutorial i will introduce you to a file called .nomedia file, The presence of this file in any album folder tells the device to hide it from showing up in the gallery.

STEP 1:
Install ES file Explorer File manager from Google Play Store and launch it. Locate the folder you want to hide from showing in gallery which most of the time can be found in any of this location "DCIM and Pictures folder on /sdcard, Downloads folder, or specific app folders, like WhatsApp."
STEP 2:
After locating the folder you want to hide, Tap the plus sign [+] at the bottom left of your screen to add a new file. You should see a pop up box requesting you name the new file, Nicely enter .nomedia as the name of the file and save it. Do not forget the full stop[.] before nomedia because that is what hide the file.
STEP 3:
Now you will never see that particular folder in your gallery anytime you go to your gallery. Repeat the trick to hide any folder from showing up in your gallery. If at any instant in time you want that folder to show again/reappear in your gallery, just navigate to your file explorer and make sure the ''Hidden files'' option is enabled [Tap the little blue icon in the top left (the phone and globe), then scroll down until you see the on/off switch for ''Show hidden files''.Turn this option on, Then head to the same folders you previously put the .nomedia files in and delete them by long pressing .nomedia file. Clear the cache of your gallery app or the media server if the folder do not show immediately in your gallery Source:http://www.rasaqtech.com/2014/07/how-to-hide-any-album-folder-like.html