One of my clients asked to create an ice berg for their campaign, not a little poster, but a 3 meter x 2 meter billboard ! The thing is massive, so doing what I do best, i research on icebergs via google. Not easy to find a massive nice shaped iceberg on the web, so I had to create it for scratch. I had to use alot of references and samples to create iceberg but it think it turned out okay. 3m x 2m canvas 100 dpi = 1GB file, Photoshop Kill.