Follow these steps to upload your theme in Magento 1.9 :
STEP 1: Copy the exported skin and app folder to the Magento root directory.
STEP 2 : Login to the backend of Magento and go to system -> design.
STEP 3 : In Design select Add Design Change from extreme right of the screen.
STEP 4 : In Add Design Change option, select the Custom Design dropdown and select 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.)
STEP 5 : Select the Save button after filling in the required fields and you are ready to use the theme.