Complex sentence: He is also known for medicine paintings which Mr. Little Thunder describes as more spiritual in nature without artistic limitations and has developed a reputation for his 1950s period work inspired by his great grandfather's experiences riding in cattle drives and performing with the 101 Ranch show.
Split into simpler sentences: He is also known for medicine paintings which he describes as more spiritual in nature and without artistic limitations. He has developed a reputation for his 1950s period work inspired by his great grandfather's experiences riding in cattle drives and performing with the 101 Ranch show.