The Emperor is coming here?!
That is correct, Commander, and he is most displeased with your apparent lack of progress.
I threw together a small LEGO diorama of the Emperor's Arrival to show off my Imperial Forces. The diorama is 120 studs long and 40 studs deep. The rear wall is 25 bricks high.
I originally intended to put together a floor made of plates and just add the Shuttle and mini-figs, but then I got ambitious and it grew into a real diorama. I decided to put in a rear wall - nothing fancy - constructed from basic bricks I had in some tubs. Then I thought I'd go ahead and create half of the docking bay portal on one end, to frame the parked Shuttle.
As I was building the rear wall, I thought it needed something to break the monotony, so I added a catwalk to hang from the second level. I put several doors along the catwalk with droids and people going in and out. The wall is a just a facade though, there are only small plates that extend beyond each door in the back.
For fun, I added a "red carpet" of red plates so Vader, the Emperor, and his entourage could review the troops.
But wait, what's that commotion in the front row of Stormtroopers? Could it be our heroes in disguise? Yes! It's Han and Luke!