1. I think "What is more, ..." in the 2nd paragraph is less attractive. Maybe: Apart from that
2. "If you need more information, please let me know and I look forward to sending you any requirements as soon as possible."
This sounds tactless to me. You should be brief here, because if they will be interested, they are supposed to contact and ask for additional things.
3. "In addition, I have some knowledge about European Union as I am a student of International relations and dealing with issues of European Union and its institutions is part of my curriculum."
This part also needs some correction. You tell us that you're a student and deal with issues of EU, at the same time, in the beginning we see: "..., I have some
This raises doubts on your competency.
This is my personal criticism. You may apply on your own discretion.