Need Youtube Thumbnail Designer

Hello!
The thumbnails on these channels are an idea of what I'm looking for:

https://www.youtube.com/c/CaspianReport/videos

https://www.youtube.com/c/RealLifeLore/videos

https://www.youtube.com/c/Wendoverproductions/videos

https://www.youtube.com/c/JamesJani/videos

https://www.youtube.com/channel/UCoOjH8D2XAgjzQlneM2W0EQ/videos

Please send a link to your portfolio or some previous relevant samples to get started!