Hi there there, I would like an recommendation from a prepress profesional or somebody who has expertise with giant photoshop information. So, consumer needs my sample illustration made and ready in 1:1 scale, which is 18 meters lengthy and three meters excessive, in 300dpi. I bought this information from a printing crew of that firm. I’m working with bitmaps, not vectors,in Photoshop. Is it even doable to work with layers if file is that this massive?
Talk to the printing team in the company, they should know what to do. Your printer is the best source of this information.