Decision making is never easy. No matter how u take into consideration every aspect, some things just get overlooked. Be sure u can justify such decision. And being a good worker, u wont be fired immediately but will give u a chance to repair mistakes.

But if it happens learn from that mistake and face a new chapter. As for your new employer there's nothing to worry when you're qualified. Nobody is perfect, to err is human...

I think I've discovered the secret of life - you just hang around until you get used to it.  ~Charles Schulz