At the lessons I try to listen to the teacher as much as possible.
At home I do my homework regularly.
At home I do exercises, learn vocabulary as often as possible.
To improve my English I should speak, listen to texts, learn vocabulary, practise writing as much as possible.
Besides, it will be useful to do tests, check for mistakes, and use a dictionary regularly.
It's also important to learn vocabulary better and try to speak more fluently.