I tried making my own building, with copy and paste. And it turned out that I need a little help

Well, first there is a shadow, which i didn't make? And then the shadow is ahed of the animation and the whole animation isn't shown!
See pic:
Now, how can I fix this? And what size must the picture be if I want to make a 1x1 building, this is a 2x2 altough I haven't used all space

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Any help would be great![/img]