Simply astonishing work at a bargain prize. If you want to impress your players with artistic style, drop the giant of your choice in a baground image to give a boost to your players' imagination. Of course, if you think to make adventures for the DMGuild that include giants, these images will serve you well.
As an added bonus, the size of the human next to the giants helps to define their size. You can see that the Cloud and Storm giants are bigger than castles...