@DARZAVIATIONOFICIAL gracias lo entendí

@@Avionesparaselular Éste video te puede servir si quieres imágenes en el juego ;)
Click aquí

@TheFlightGuySP He explained it very well,
@Avionesparaselular what I see is that you did not place the parentheses correctly, use these () for the url

Blueprint mode

I know I'm not Darz, but you can upload images to forums/descriptions using the  format.
In terms of uploading images, I'd recommend postimages.org. If you use postimages, use the Direct Link option when prompted.

Edit: oh you meant in-game.
In that case, take a screenshot and load the image into the designer as a blueprint, then use the publishing menu to take snapshots with your "blueprint" image in the background.