This is a really decent piece of art; I like it! However, there are a couple things that feel slightly amateur to me, no offense. one of them is the white hole to the right of the picture; you could easily seal that up with more storm images or by expanding the current image. Also, the tops of the houses suggest white, which also could be fixed by covering it with more storm. If you need to cover stuff like that, just get a large storm image and put it behind the minecraft city. The city itself is FANTASTIC and I approve heartily! Overall good piece, with a couple small things that would make it much better!
This is a very great work, I love the shading effects you have done for it.
I have to say that the storm photo you used is fairly low quality and very easily kills the looming effect. The textures you use for some of the blocks are a tad jarring. I'm guessing you used gravel for the asphalt, I would suggest changing to texture to something a bit more smooth, but still really grainy, so you can't as easily see the block-to-block pattern.
The shadows are brilliant! I would sugget smoothing the leaves shadows because light doesn't bounce through tress in a direct way, it comes out very blurred.