Private Album and Post Images album are special albums and are always private.
To create a photo album visible to your friends please follow these steps:
- Go to your profile page
- Select "Photos"
- Press on the "Create an Album" button
- Choose the level of visibility/privacy that you want; for example, "My Circle/Friends Only"
- Then you can move photos from one album to another. You can do that by either entering the photo you want to move and press "Move to another Album", or use the "Sort/Move Photos" button in the source album.