How are you doing with your trading? I hope that you are getting the results that you want. If you aren't then perhaps you should try to improve the methods that you are using. You should consider doing a technical analysis course and that should give you the improvement that you want.
A technical analysis course should help you avoid some costly trading errors. The courses themselves can be quite expensive so it is important to know what you are looking for before you begin. There is a lot to learn and it is easy to miss things.
Do you have the time commitment to do the course? If yes, then do to have to commitment to follow it through afterwards. There is no point in doing a technical analysis course and then not implement the techniques. You will be surprised with how many people do that.
You also need to weigh up exactly where you are with your trading. How large is your trading account at the moment? If it is small then perhaps the course won't be worth it.
How much do you think you will earn after the course? I don't know the figure that you just thought of but you will probably earn less than that. This is not to say that you shouldn't do a technical analysis course, you just need to be realistic. Work out how much extra you think you would make in a year and compare that to the course price.
If your budget isn't very high then you shouldn't go for a classroom based technical analysis course. You will be able to find books and DVDs about the subject. You should be able to learn the basics from these.
Whatever option you choose you should always remember that it is not a sure fire way of making money in the stock market. There isn't one of those. All good things require a bit of work.