Hello dear,
Simply if you want to acquire the Speaking skill, practice speaking. There is no way but that.
Now, you have to concentrate on that: How can I improve my speaking?
To do so, there are many websites. Try to find a conversation, read it, understand it(be sure to know the meaning of every single word), listen to it many times until you feel that you can understand it when it is spoken, then try to speak and repeat the conversation after the native speaker. First, try to repeat it sentence by sentence, then try to say the whole conversation.
Or there is another way if you want, choose a topic, imagine yourself that you want to present this topic in front of an audience. Try to prepare for this topic; first, decide what are the outlines that you want to talk about in your topic, write down what you want to talk for each outline, after that try to speak it with yourself. At the end, after you make sure that you are able to speak what you have written about your topic, try to present your topic without reading. It is better to let someone if possible to listen to you and then give you a feedback.
I know these suggestions may take time and effort, and they sound difficult, specially for beginners, but they are effective and deserve that.
Good luck.