Levert's simple cartoon faces explore a range of emotions from fear to jubilation. Her characters' expressive body language effectively conveys their excitement, worry and relief. The line between fantasy and reality is often obscured in Sleep Tight, Mrs. Ming . The home shared by Mrs Ming and Jeremiah features few borders. Turtles, giant rabbits and sea monsters drift through the house as Jeremiah or Mrs. Ming's imaginations run amok.
Rooms contort as they fill with strange creatures and cacti.
Throughout these illustrations certain elements such as chests and light-fixtures remain constants, precariously balancing the story somewhere between fantasy and reality. Trees grow out of the floor and walls transform into a country landscape, yet Mrs. Ming's striped rug always remains. The walls dissipate into the night sky, while a bedspread metamorphasizes into sea-monster and rides a wave into another illustration and out to sea as stuffed animals grow into giants disturbing young Jeremiah. Levert scatters her pictures with little details that maintain continuity throughout the book such as shoes, blankets, stuffed animals, books, and clothing. Levert's attention to detail makes the pictures a joy to explore time after time.