How to use "skill" in a sentence

Sentences

But he was not a doctor or a surgeon because he showed very little medical skill or knowledge

A skill

Oh boy, what a talent! What a skill Jimmy had!

Unfortunately, George Alexander, chief of the Nevada bureau of the Network, hadn't possessed the patience or the skill to determine the woman's true motives

That's really what I most wanted to be, but I didn't really have the skill for it