This piece took me a few days because I am new to isometric art. So I wanted to do it properly and have it look nice. :)
I am very proud of this work, I followed a tutorial by pixelblink. So many credits go to him/her. pixelblink's profile http://pixeljoint.com/p/224.htm
I think you should be expecting more isometric pixel art from me in the near future, I am definitely a fan.
Feel free to critique below and suggest what I can do to improve my art. because I do want to become the best artist I can be.  | 
This is really nice for a first isometric piece! This can be quite difficult to do. I am fond of the black cartoon outlines and the colors you used. You could perhaps add some more details and variation in shade (e.g. making all aspects of the building facing away from the lightsource be shaded.)
Overall, I am quite fond of this piece. Good job.