create 15 attractive thumbnails

I'm looking for someone who can help me to create 20 attractive thumbnails for my youtube channel for the videos which are up and running. hiring professionals for creating the thumbnails. In return, that you can attract more customers who will pay you the money you deserve. Thank you in advance

Show an example of your work please, apply only if you can do better thumbnails than I have now My channel -
https://www.youtube.com/watch?v=gbuHT4YWW8Y