#scale texture

In order to create texture on a 2d plane one must think about value and color relation. How will colors look if they are made out of a certain material and how will that material be affected by light. Will it be matte, will it reflect, will it shine? How is the light affected by the small patterns of shapes in a texture?

This illustration of a Red Dragon from Dungeons & Dragons serves as a great example for understanding the questions of texture and how it works.