3 things:
1. One week is not enough time to measure your total traffic. Give it at least 4 weeks before you dismiss the submission as failed. Many TGPs take weeks before listing you.
2. As someone pointed out, if it's "your" first submission, don't expect great returns. Give it at least 10 submissions before you expect real traffic.
3. <10k uniques is definitely way too little traffic after a week. Maybe your gallery wasn't interesting enough? Remember, first you market to the TGP then you market to the surfer. Sad but true...
Mind letting us in on which gallery submitter you used? It definitely was NOT GallerySubmitter.com
I'm glad to say our numbers greatly outdo the ones you just presented us with...