Complex sentence: Makart, who was a poor draughtsman, but who had a passionate and sensual love of color, was impatient to escape the routine of art school drawing, and was found to be devoid of all talent and forced to leave the Vienna Academy.
Split into simpler sentences: Makart, who was a poor draughtsman, but who had a passionate and sensual love of color, was impatient to escape the routine of art school drawing. For his fortune, he was found by his instructors to be devoid of all talent and forced to leave the Vienna Academy.