1:The wall texture is very badly distorted: it is either stretched or squished, depending on how you look at it. Remember that the game squishes wall textures horizontally, so you may need to stretch parts of your texture in order to have them look right in-game.
1:While the wallpaper looks great on the short wall level, it is stretched to cover the medium and long wall heights. Remember, the wallpaper should be seamless across all 3 wall heights and should not stretch to cover the taller heights.

2:Most of the wall texture is not distorted, however some elements which are obviously supposed to be square or circular have come out rectangular or ovular. Remember that the game squishes wall textures horizontally, so you may need to stretch parts of your texture in order to have them look right in-game.

5:Your texture has no distortion and looks great on all height levels. Fantastic!