Desktop App Demo Video Creation

I'm seeking a skilled video creator to produce a high-level overview demo video for my desktop application. The primary purpose of this video is to showcase the app's features in a professional tone.

Key Requirements:
- High-level overview of app features
- Professional tone throughout the video
- Engaging visuals and animations
- Clear and concise narration

Ideal Skills & Experience:
- Experience in creating software demo videos
- Proficiency in video editing software
- Strong understanding of app feature presentation
- Excellent narration and scriptwriting skills

Please provide samples of previous work.