Create a full-length rendered image of Mary Poppins, using Steve Rogers' male figure for the body. Retain Mary Poppins' head, hairstyle, and facial features. Incorporate her iconic costume while adding embellishments inspired by Captain America's uniform. Adjust the costume to fit Steve Rogers' proportions. Design a background that harmoniously combines elements from both characters, emphasizing their unique worlds and styles. Ensure the image captures the whimsical charm of Mary Poppins alongside the heroic essence of Steve Rogers, merging their characteristics into a cohesive and striking new portrayal.
