YouTube Thumbnail Design & Pinterest Upload

I'm in need of a proficient designer who can create a fresh, professional and clean YouTube thumbnail for me, while also ensuring it complies with Pinterest's guidelines for uploading. The project encompasses both designing a new thumbnail and uploading an existing one.

Key Responsibilities:
- Design a minimalistic, yet professional and clean YouTube thumbnail
- Ensure the design meets Pinterest's guidelines
- Upload the designed thumbnail onto Pinterest

Ideal Skills:
- Graphic Design
- YouTube & Pinterest Proficiency
- Understanding of Branding Guidelines
- Attention to Detail
- Ability to Deliver a Clean, Professional Design

I want someone who can teach me how to do this on my own.