Very nice design, nice textures, however the picture itself is grainy. Consider allowing more render time or higher render quality. Originality got bumped down to 4 mainly because of the crates tied down with the rails (was done before).
I like the forklift, however it may be too close to the wall. I like your yellow and black checkout area, the yellow represents the caution colors correct? The warehouse storage crates themselves are greatly randomized and it must have taken plenty of work. It looks like you worked hard to make the poles on the storage racks look connected to the racks.