Hi, I think both of your horses are awesome! :) It's cool that you are trying something new, and good luck to you, your horse looks like he is working with you and up for the task as he is very handsome and a nice going horse.
What do you do with your stb? I have stbs as well, and am always encouraged when people use them for other than racing. They are wonderful horses, and usually give more than they get and are very happy to be part of loving partnerships!