A: Hi, I think that Bluepic could be the perfect tool for you.
I would encourage you to sign up for a free test account and try designing a thumbnail template with our template builder.
If you're having any difficulties coming up with a great design, reach out through the in-app support. I'd be happy to help.

Also, for the next video tutorial I plan to design and showcase a thumbnail template so keep an eye out for that on our youtube channel.