To better in automation you have to practice a lot .
Try to automate small small funtionalities that you have in your application.
If you are using selenium then practice for xpaths multiple combinations, ways to write, how to write it for complex elements.
Practice different fields like drop-down, radio button,etc
Handle keyboard and mouse events
If you have framework then try to fit your scripts in the same. Or try to create your own.
Practice multiple frameworks
Practice for reporting part which is also required with different charts ,etc
Practice the programming language if you are using,
For your benefits
explore maven, git, Jenkins etc so that it will be useful for you in future.