Can I just say that I was impressed that the first mooring you did was stern on. That was something I avoided until our second trip, so congratulations! Looking back, I think we were very lucky on our first trip. It was the first week of the season (March), so most moorings were empty...which took the pressure off trying to moor before an audience, and the weather behaved itself, so we didn’t have to contend with wind blowing us about either.
As Jean (SwanR) has already pointed out, we have all started out as nervously as you have. To be honest, I’m still learning.