Are there any experienced shooters at your club who are willing to observe your shooting and make recommendations? In my opinion a good coach can make all the difference in helping to identify what your problems are. At my own club I know there are a number of well qualified shooters who are happy to help out newcomers. Ask around first and try to avoid the club "know it all". One of our better shooters can make a pump gun sing like a semi-auto.
Jim
Jim