Follow these steps to upload your theme in Magento 1.9 :
1: Copy the exported skin and app folder to the Magento root directory.
2 : Login to the backend of Magento and go to the System -> Design.
3 : Next in the Design select the Add Design Change from the extreme right of the screen.
4 : Then in the Add Design Change option, select the Custom Design dropdown and choose your theme.
(Note: providing values to Date From and Date To is not mandatory. These two options can be utilized to provide a time period for which the Custom Design that you selected will remain active and visible on your website.)
5 : Select the Save button after filling in the required fields and you are ready to use the theme.