iMovie import from iTunes to iMovie app

Just purchased iMovie app for ipad 2. I created a project within the App while on the go, then transferred that project to my iMac to complete once home. Now I'm trying to import the file back into the iMovie app - as I may need to make changes on the go. I followed the instructions but keep getting a "No Projects Available to Copy from iTunes" message when I tap the download icon. The instructions appear to give the impression the project will just appear even without having to tap the download icon, but nothing is appearing.

The instructions I followed are below:

1.) Connect your iPod touch, iPhone or iPad to your computer

2.) In iTunes, select your device and click the Apps button

3.) Below File Sharing, select an app from the list, and click Add

4.) In the window that appears, select a file to transfer, and click Choose

I able to get the project loaded into the video player to play it, but I need it in iMovie to edit.

Any suggestions to what I'm doing wrong?