4K Vlog Thumbnail Design -- 2

I need a set of YouTube thumbnails that burst with energy and pull viewers into my travel-style vlog the moment they scroll past. Every graphic must be produced in true 4 K (3840 × 2160) so the details stay razor-sharp after YouTube compression... (Budget: $25 - $50 USD, Jobs: Adobe Illustrator, Animation, Color Grading, Graphic Design, Logo Design, Typography, Visual Arts)