This link was posted a couple of years back but since then, the artist has added additional works. Incredible artwork, mostly of RAF Lancasters but also some nautical subjects. Never seen such impressive attention to detail.
Some great ideas for weathering as well. Worth checking out.
http://www.vintagewings.ca/VintageNews/Stories/tabid/116/articleType/ArticleView/articleId/483/language/en-CA/A-Terrifying-Beauty-the-Art-of-Piotr-Forkasiewicz.aspx