Welcome to the forum mate, btw not everyone here abouts is american, there are a few blowins like myself from across the pond so to speak.
I have found with most new shooters their first few times they do really well and then they appear to get worse, why you might ask and in my humble experience it is because of perceived expectations.
When you first try it, you have no expectations your mindset is completely empty of what you are capable of and you are under no illusions. However after you first have a go you set yourself a benchmark and you expect yourself to excel that every time, well you dont, you cant. Only with time, training and repetition (correct training) will things become natural to you, your stance, trigger control, breathing. If everyone got better at their initial learning curve their would be expert marksman and Olympic quality shooters neck high at the local dump.
Take your time, enjoy the sport of shooting, have fun, be safe and set your mind not to expect unreal performance increases, from now to you die, each performance increase will be a gradual improvement, shooting guns aint like in the movies eh

cheers
sledge
(from downunder downunder)