Play chess against the computer and beat this nice flash chess program. Apply the chess strategies that you have learned on my site. Remember, get your pieces out quickly and castle as soon as possible to bring your king into safety.
Good chess players read chess books or watch chess videos and analyze their own mistakes they have made in their games to become better.
Beat this flash chess applet. It will give you a hard time, I promise. If you can beat it, then you are a good player already. But you can improve much more, of course, and reach higher levels.