Success is the sum of small efforts, repeated day in day out. (Robert Collier)

You can practise your listening skills here and here. Then you can practise and improve your writing skills here, and your reading skills here. Make sure you know the past and past participle forms of regular and irregular verbs and how to pronounce them. Don't forget the combinations of verbs and prepositions like wait for, listen to, arrive at/in, etc. Continue to read, read, read and read. Good luck!