Vibrant YouTube Thumbnail Illustrations

I run a Tarot-reading and spiritual-healing channel and need a series of custom thumbnails that instantly arrest attention in the YouTube feed. Each design should feel alive with eye-popping, high-saturation colour while staying crisp and professional at 1280 × 720 px... (Budget: $250 - $750 USD, Jobs: Adobe Illustrator, Digital Art, Graphic Design, Illustration, Illustrator, Landscape Design, Manga Thumbnails / Name (Nemu), Photoshop, Typography, Visual Design)