Hello:) My ideas to improve listenings skills in English are:
- daily watching english spoken cartoons. Go to youtube and browse something for you :) peppa pig, south park etc. :)
- bbc 4 and other bbc podcasts to download and than to listening
- use apps to listening and repeating :)
The most importaant is to do it daily :) You will see the results in short time!
Good luck!