Well... you still should worry. That's why we do it. That's why we say maybe you shouldn't do it. Just to make you aware. Everyone has their concerns and I just... worry about everyone, really.
But you have to consider what you're getting and where. Shoulder blade is a nice spot for a first apparently. But like... the first KH one you posted would look rather silly on your shoulder blade. Maybe in the middle at the top or...well, a tramp stamp, but not many other places unless you stretch it out enough to be an arm band. But that'd look weird in my opinion.
Whereas the kanji/boxed ones would look fine.
I mean like, Lapras is my favorite Pokemon... but it just wouldn't work as a tattoo. It'd look ridiculous. :c Shame, too.