Hello, my name is Ander P. Akizu.
I work as an illustrator and concept artist, specialized in Photoshop.
I can create as many thumbnails as you wish, my price will depend just on the number.
Otherwise, I usually charge 10-14$ per hour, we can set a determinated price if you give me more info. about your request (number of thumnails, images...)
Be sure to check my portfolio, greetings!