Complex sentence: In addition to pastries, Thiebaud has painted landscapes, streetscapes, popular characters such as Mickey Mouse as well as cityscapes, which were influenced by the work of Richard Diebenkorn.
Split into simpler sentences: In addition to pastries, Thiebaud has painted landscapes, streetscapes, and popular characters such as Mickey Mouse. He has also painted cityscapes, which were influenced by the work of Richard Diebenkorn.