Cloudscape

A special drawing technique which can be highly effective for people with much imagination is to draw patterns which they discern in the irregularities in the paper. These patterns are called pareidolia's, and in people with schizotypy can be very lucid.
This is due to a phenomenon called apophenia, in which one sees patterns or connections at random. This is especially common in people with low latent inhibition, ie who don't filter "relevant" from "irrelevant" information as well -- though it's subject to discussion what information is relevant and what is not.
If you are a person who can see patterns everywhere, in clouds, in marble tiles, in wooden panels, try this. Just look at your paper and think of whatever it is you want to draw. This is possible in any paper, even if it's very even, but is easier for smaller drawings (which can be part of a larger drawing). If you have a vivid visual imagination, you might be surprised at the results.