What portrait does the narrator create of Roderick with the descriptive details that he uses

Despite (or because) of his madness, Usher is skilled at music and apparently is quite a painter. The Narrator compares Roderick's "phantasmagoric conceptions" to those of a real artist, Fuseli, and the Narrator seems both entranced and terrified by them. "If ever mortal painted an idea," he proposes, "that mortal was Roderick Usher." Insofar as art might be deemed a stab at immortality, the death-obsessed Usher, so certain of his own demise, strives to cling to time itself by producing works which can last beyond him. And insofar as art is a fleeting good in itself, Usher might at least claim a bit of beauty in the midst of his anxieties. Ironically, though, the one painting of his that the Narrator describes portrays a tomb, and everything is finally destroyed by the House's collapse. It would seem that his art fails Roderick Usher.