Ah! This character is so adorable! I love her colors and the blue eyes really seem to tie it all together somehow. I, personally, like the look of the first one! I think it is cute and I like the angle at which she is laying! Cute as heck screenshots. <3
These are adorable screenshots, goodness. I like the second and first the most out of all of them. Those two would be perfect thumbnails. Though, it looks like the first one is the most popular out of everyone, so I think you've got your answer! Personally, however, I would pick the second one. Nevertheless, it's what you think is best!