How does Washington Irving's use of descriptive details to create a frightening image of the man Tom meets in the forest?

Irving uses ominous dark imagery. The stranger has "gruff voice" with a “swarthy and dingy face” that was “begrimed with soot,” “a shock of coarse black hair,” and “great red eyes.” He carried an axe on his shoulder which added to the fear of this dark stranger in the woods. You need to submit each of your questions one at a time.