If you are not enrolled in continuing classes in some sort of martial art, the best way to improve your skills and continue to develop new ones is to get enrolled. 

When looking for the right place to train, check out the area.  Find out what classes are offered and what you are interested in, and then see if the instructors are people you feel you can work with and trust.  Then just go for it! 

Our links page has some listings of schools.