Complex sentence: Her most recent collection was said to have been inspired by Pollock combined with her signature urban vibe, which included simple silhouetted, muted-colored pictures in the foreground of the colorful and abstract background.
Split into simpler sentences: Her most recent collection was said to have been inspired by Jackson Pollock combined with an urban character. It included simple silhouetted, muted-colored pictures in the foreground of the colorful and abstract background.