...typo of PJ? I mean, he just joined, so maybe?
Whatever. There's a couple of comments I'll make on the piece. First, and probably easiest: You have that extra step around the edge of the front, but seem to have forgotten that it should wrap aroudn the back as well. I made a very similar error in the past, but this isn't a hard one to fix. Second: The roof tiles. There isn't much inherently wrong with them(although purple is an odd color for a roof) but they don't tile fantastically. At the corners if the roof, the pieces meet kinda awkwardly, when in reality they would stay in full block shapes and just overlap. The other issue with the roof tiles is that they're OBVIOUSLY mirrored. This not only scrambles your light source but just makes for a weird, symmetrical impression, which shouldn't be getting conveyed in an iso piece like this. There's also some weird contrast issues in certain spots of the purple palette. Third, a signature is pretty unnecessary in a submitted piece here; we can see your name already, and putting it off to the side like that doesn't exactly do much to prevent theft.
But that's just scrutinizing the piece. What did I like? Primarily, the columns. I really like the kinda staggered look, how they move from thick-thin-thick-thin sections as you move up, I think it adds some special visual interest. The yellow palette is also very nice, it's simple and smooth.
One final note, though. Is the word "CLICK" in the preview NPA? It looks liek it was made with a text tool. I don't know if that's allowed(it totally could be and I just don't know) but I thought I should just point it out to keep in mind in the future or something.
Pixel King? Player Killer? Purple KoolAid? Purrrfect Kitty?!? Don't leave us hanging man! 
cool house dude