Listening skills can be developed overnight. To take the training repeat continuously for 3-4 times. Listen to once a few minutes but emphasize the practice often. Will be more effective listening hours but once trained only once a week.
If someone feel that spells started improving. While listening to practice speaking. Speaking after we will focus on what to listen more. And it is the check to ensure that the correct things heard even more.
The next level of each person is not the same. Some people might take months. Some people might take a year. Depending on the ability and commitment to language learning no shortcuts, trained only to make us better. The more who wants to go to a foreign student is more to fit more. The result of his efforts. We will return more than it's worth. What will be improved in order to practice the language to everyone.