No, images are fine or should be, just paste the image url between the code; oh and be sure it's the image on its own otherwise you'll post an image of the web page it was on.
I'd show that one you had as an example but that's just all manner of wrong, I mean his head is still attached or he's not clutching vainly at his throat, but a truce as you say.
Instead I'll post this:

Hope is but the first step upon the road to disappointment.