In the first link I like the upper right the best. The one in the lower right is good. The other two in the first link are okay and the two in the second link are terrible. Yes, the shirt looks better tucked in. I think it looks good on you, you look super cute. Are you wearing tights? I can't really tell if you are or not.
Leave it tucked in! It doesn't matter what others like to do! You have a cute figure & your curves are part of your best features! Leaving the blouse, or a long top, out just makes you look less shapely. Besides, it's extremely cute, stylish & attractive with the blouse in, & makes you look taller! I see this was a while ago. Which did you end up doing? :)