Complex sentence: The immense tapestries celebrating historical events were largely out of style; an increased amount of the work was the creation of designs, especially polychrome floral patterns, for the upholstery of the royal furniture.
Split into simpler sentences: The immense tapestries celebrating historical events were largely out of style. An increasing amount of the work was the creation of designs, especially polychrome floral patterns, for the upholstery of the royal furniture.