I think this image would look a lot more dynamic at a sunset or even an evening time... with the lights by the door lit with some cool shadows going on.

Also, I think the biggest thing that jumps at me, is how clean everything looks. Dirty it up a bit!

Lookin' good! It's not uncommon to get bored with a project. If you need the creative pick-me-up, work on something new for a while and come back to it.