Design a All banner's, thumbnail and poster's

I need a promotional banner designed. The banner will be used on various platforms, so it needs to be adaptable and eye-catching.

Requirements:
- Create a visually appealing banner
- Flexible design for multiple platforms
- Bold and engaging graphics
- Relevant to my brand/theme

Ideal skills and experience:
- Proven graphic design expertise
- Experience with promotional materials
- Strong portfolio with similar projects
- Proficiency in design software (e.g., Adobe Photoshop, Illustrator)

Please provide samples of previous work and any relevant experience.