[HELP] Blender modeling

[Your Computer]

If you're viewing it in Blender, then you shouldn't worry about it till you try to import to Amnesia. However, if you can't stand looking at it like that, then in the Materials tab make sure Transparency is enabled and set the alpha to 0. Then in the textures tab, make sure Alpha is checked and has a value of 1 under Influence. Then when you render the image, it shouldn't show the black background of the image if the image has an alpha channel.

You should note that not all image formats support transparency. DDS and PNG support transparency.