Create an illustration featuring a diverse group of professionals standing in a line, but modify a few elements: 1. **Occupations**: Include a teacher, a barista, a scientist, and a firefighter instead of the original professions. 2. **Attire**: Change their clothing styles to be more casual for some (e.g., jeans and t-shirts) and formal for others (e.g., suits and dresses). 3. **Accessories**: Add unique elements such as books, coffee cups, lab equipment, and a fire hose. 4. **Facial Expressions**: Alter their expressions to reflect friendliness and approachability, with some characters smiling and others looking focused. Remove any specific brand logos or identifiers from the clothing or accessories.