revised due to queue scoring. removal of the while background, more consistent shading according to your lightsrouce, a bit of color editing, the addition of windows, and having the roof overhang the walls a tad would all help this piece.

Not an experienced or great pixel artist . I am learning and will take care of the things you said. Thanks

I think you should finish shading the right side, add some texture to the wood, and either add a background or make it transparent. Nice general structure though.