Animated App Promo Video

I'm looking for a professional animator to create an engaging promotional video for my app. The video should be animated and have a professional tone.

Key requirements:
- Focus on highlighting app features
- High-quality, visually appealing animation
- Professional tone throughout

Ideal skills and experience:
- Expertise in animation software
- Strong portfolio of similar projects
- Ability to convey complex features simply and effectively

Please share samples of previous work and a brief outline of your approach.