Here is a second scipt for a three-lesson preparation pack.

Dreams are sometimes strange. Some people report seeing buildings made from water, other brick monuments and even stainless steel castles. It would be very hard to find such items in real world. That is why we need to use some computer graphic programmes to alter the reality a bit. We will learn mapping technique (covering items in graphic files with some textures). But before doing that you must create a collection of textures that appear in your dreams, are important for you, or even ones you see often. How to do that? It's very simple, just aim your digital camera at some brick wall, wooden fence, a pile of leaves etc and make a collection of textures. It's your task to collect at least 15 of them. Remember, try not to be too close and make your textures as many items as possible.

Some examples from the web: