If you are a new user of OneDrive you can get more space, as you have already provided 15GB of Free space now Microsoft provide more space 15 GB extra when you configure Camrea roll backup to save photo automatically in OneDrive. When you upload all the photo automatically. It’s easy to view them anytime, on any device.
You will get 15GB when you signup additional apace will be reflect when Automatic upload photo on OneDrive then you will get another 15 GB in your account.
There is one more option to get more space when you recommend to your friend and you will also get bonus free OneDrive space.