You can ask the painter. Boris Vallejo? Painting, or go to China Book Network to buy the book "Encyclopedia of Magic and Science Fiction Painting Techniques". I only bought 29 copies. I have already bought one, and I feel this book is good. They are all from science fiction painting in 1980s and 1990s abroad, and most of them are hand-painted, which is very suitable for science fiction painting lovers. Is this the address of China Book Network /GROUPBUY/groupbuy.aspx? groupid= 1806？ If you are interested, you can go to Taobao, but as soon as possible, otherwise the price will increase.