Textures

Hi everyone. After work yesterday, I went to the art lab and added the textures to the Villa and Cottages. I did two different Cottage textures, but still, non of them have doors. I wanted to ask if the resolution of the textures on the buildings seems bad? Also, when I put the textures on the buildings and rendered, I noticed that they appeared to be a little transparent. Not sure why this is. Anyway, the file is in the ao folder in the game folder. So please take a look and let me know what you think.
Thanks!