Hello Maram. How are you doing? I hope you are OK.
When you say "Make English conversation seems faster" probably you mean "Make my English conversation seems more natural (or fluent).
My pieces of advice are:
1 - Don't confuse fast conversation with fluency during the conversation. Persons speaking too fast does not mean that they speak fluently. Fast speaking most of the times is understadable and it's necessary to ask for repetition from whom is talking. Speak in a speed not so fast as a rocket, but also not so slow as a turtle.
2 - Fluency comes from flowing, like water flowing in a stream (or river). Independent on the curves and other things the wather cross following its way, the water continues flowing. To be fluent in a language does not exactly means you dominate it absolutely. First you learn how to speak and have fluency according you practice; later you will learn the formal language and possibly have a domination level of it.
3 - Having or not accent during a conversation, the important point is being understood for the other ones you are talking to. Lose the accent in the adult phase is a lot difficult but despite of it, communication that matters.
And finally, 4 - Listen too much, listen good and listen always. And do not forget to repeat what you listen until you can do equal or almost equal what you have listened.
Good luck, happy studies and best wishes.
Rod.