What conflicts and contradictions do you notice in Browning's Portrayal of Andrea Del Sarto?

They live in Florence. Andrea begs Lucrezia that they end a quarrel over whether the painter should sell his paintings to a friend of his wife's. He acquiesces to her wish and promises he will give her the money if she will only hold his hand and sit with him by the window from which they can survey Florence.

He admits to feeling a deep melancholy, in which "a common grayness silvers everything" (line 35), and hopes she can pull him from it. He tells her that if she were to smile for him, he would be able to pull himself from such sadness. Andrea considers himself a failure as an artist, both because Lucrezia has lost her "first pride" (line 37) in him and because he has only one talent: the ability to create faultless paintings. Though many praise him for creating flawless reproductions, which he admits he does easily, with "no sketches first, no studies" (line 68), Andrea is aware that his work lacks the spirit and soul that bless his contemporaries Rafael and Michel Agnolo (Michelangelo). Considering himself only a "craftsman" (line 82), he knows they are able to glimpse heaven whereas he is stuck with earthly inspirations.