Sales Data Bar Graph Design

I'm looking for a skilled graphic designer to create a bar graph representing sales figures. The graph should visually categorize data by product categories.

Requirements:
- Design a clear, professional bar graph
- Use color and labeling effectively
- Include product categories on the x-axis
- Ensure the graph is easy to read and interpret

Ideal Skills:
- Proficiency in graphic design software (e.g., Adobe Illustrator, Excel)
- Experience in data visualization
- Attention to detail and creativity

Please provide samples of previous work.