An expert never stops to be a student. He always endeavors on improving what he already knows. Knowing about something is not enough, you also have to learn all about its different intricacies and you have to know everything about the concerned practical applications. This is how you can improve. Here are some steps that you must always to keep in mind when you are looking for ways to improve.
You can consider taking up courses to refresh the knowledge you have about a subject and it does not have to be a full-fledged course. You can attend a workshop or a seminar that is conducted in the area. You can also consider going back to college if it is necessary before you are considered as an expert. The advantages of going back to college are that you will also gain certification that can backup your credentials.
Someone said that there is no better teacher than experience. It is indeed the best teacher and you will be able to learn from what you do. Expertise will come when you begin applying your knowledge, you will begin to understand where you are going wrong and you will try to correct the mistakes you are making. You will not be able to learn these from books, experience is a must if there is a need to improve on things that you do.
Looking at what other people do. If you consider yourself as an expert in fly fishing, look at how other people do it. It will help you to know about different techniques that you can use. You can even learn something better than what you already know. You can gain different how-to-tricks that can be useful to you.
Internet sometimes cannot be considered as a great teacher, however, it certainly has an important and different source of information. If you want to become an expert at anything then you can use any of these resources to improve your own knowledge. We have already talked about YouTube if you want to see video clips. You can also read information on the internet from other people. You can also read articles about the subject. If you check directories such as WiseGEEK, Buzzle, eHow, EzineArticles, Bukisa, WikiHow, About, Firehow among others; you will be able to gain much information about something you choose. You can also see photos and videos of people who are doing the same thing as you.