Wow, what a cute and sweet game! It's got art, sound, music, and simple intuitive gameplay. I cannot get over how good the art is and how funny the cowboy grunts are.
I do wish there was some sort of gameplay loop here, with difficulty scaling or some other mechanic that made it more than just a "draw the loop" game for replay value. I can definitely see you expanding on this and making it a fully featured game!