Student: "I really need to improve my spoken English."
This is a common request, but in my experience, it's only half the problem. Yes, it's important to know that you have to make people understand you. Communicating your message is only 50% of what communication is.
When you speak with people in English, how much do you listen? Do you try to listen actively and show the other person that you're mentally connected to what they're saying?
When you speak in English, do you practice your listening with the other person (or people) you're talking to? Or do you focus on how you're going to say the next thing you want to say?
To be a good speaker, it's fundamental to be a good listener.