Congratulations on your already high level of English. I am sure you will be able to accomplish a great deal with your British contacts. May I just make a few suggestions ?

My interests

At this time my main goal is to improve my English. Especially my business and legal vocabulary. I have always been driven (passionate about ?)  by foreign languages, history and literature.

I should study harder in order to be capable of conducting negotiations, making bargains, suing properly.

(I am not sure if suing is what you mean - check this definition

http://www.merriam-webster.com/dictionary/sue

Very soon I will have business contact with British attorney in respect of business issues.

(Very soon I will be doing business with a British attorney -- keep it simple !)

I am very concerned about my ability to communicate with him at a high level. Collaboration on legal issues with him is of great significance to our company.  (Well done !)

I have always been driven (motivated ?) by the opportunity to communicate with people from different backgrounds . So for this reason I hope I could make international friends via skype.

Good luck with your next project !