E-commerce and PowerPoint Design

I am looking for an experienced freelancer to help me market my clothing and electronic products online. Additionally, I need a PowerPoint presentation designed at a very reasonable cost.

Key Requirements:
- Experience: Your application should demonstrate your expertise in e-commerce marketing and PowerPoint design.
- Skills: A good understanding of the e-commerce landscape and the ability to produce high-quality PowerPoint presentations.
- Deliverables: The main goal is to boost sales through successful online marketing campaigns.

Please provide relevant previous work, and any insights and strategies you intend to use to increase sales.