Picturesque sludge canals or deadly streams are easy to make if you have the right glue. Designing their shapes and placing them is a captivating puzzle game on its own as a bonus »
The trick is to think backward. Normally you paint shadows in the recesses of a model and then highlights on the edges emphasising how the external light plays on the shape. Fire has a light of its own and so the roles are reversed and the deeper you go, the lighter it will be. »