Onboarding Presentation Refinement

I need a professional designer to enhance my draft presentation on my 3-month onboarding experience at a new company.

Requirements:
- Format the presentation with a professional and sleek design
- Make the main content more expressive with:
- Charts and graphs
- Images and illustrations
- Quotes and testimonials
- Ideally, you should be skilled in graphic design and proficient in presentation software like PowerPoint or Keynote.

Please provide samples of previous work.