"Create a series of realistic background mock-ups for a prenatal theme

"Create a series of realistic background mock-ups for a prenatal theme, suitable for use in educational materials or prenatal care guides. Each background should feature soft, neutral tones that convey warmth and serenity. Include realistic elements such as close-up textures of soft fabrics like blankets or knitted baby clothes, gentle lighting that suggests a cozy and welcoming environment, and subtle shadows to add depth. Incorporate delicate motifs like a baby's hand gently holding a finger, an ultrasound image, or a soft-focus image of a mother's silhouette. Ensure the designs have a calm, nurturing feel that reflects the essence of prenatal care."