Where did Ernie hide the photograph?

Hint 1 of 7:

Talk to him until you can trick him into leaving.

Hint 2 of 7:

Once he is gone, search behind his counter.

Hint 3 of 7:

The photo is inside the black suitcase, hidden under everything else.

Hint 4 of 7:

Move the pieces around to get to the bottom of the right stack.

Hint 5 of 7:

Move everything to the right side and expose the left manila envelope.

Hint 6 of 7:

The left manila envelope is in the way.