How to improve your listening skills.
1. Be patient, it won't happen over night.
2. Be consistent, you can't learn to listen in one day, listening for 12 hours, it has to be a constant effort, you should listen daily to the radio in the car, watch English movies, podcasts...
3. Listen to a variety of accents. The English world isn't only England, it is Scotland, Ireland, Trinidad and Tobago, Australia, New Zealand, India, The United States, Canada and many, many, many more. English is also a second language to many and they also count!