This example is from Wikipedia and could be reused under a CC BY-SA license. They can be sculpted into various designs all through this process, sometimes leading to deep thumb-print like indentations on their own surfaces identified as regmaglypts. From Wikipedia Intelligent Vocabulary: linked terms and phrases Sculpture bas-relief bust https://sculpted-md-lakewood01090.designi1.com/57284976/sculpted-md-lakewood-no-further-a-mystery