motivation letter for a job...please help

Hola !
Let me give it a shot... See in purple below.

Susanne wrote:

Dear Sir or Madam,   I am aiming at an international career in a multinational company, and I would be grateful for the opportunity to participate in the Top Flight Entry programme offered at ***. My areas of interest are Customer service as well as Marketing and Sales.   I graduated in International Relations and Diplomacy in July 2004 from the University of ***. My four-year degree involved several courses in international economics and law issues. During my studies at the University of *** I got increasingly interested in economics and business ; and took several courses in international management and trade. I am currently pursuing a Masters degree in International Relations at *** University, Spain. My research topic is „A comparative analysis of models of economic development in the EU”.   I got the opportunity to have a greater insight in international sales while working as assistant of the import/export department at ***. I learnt to communicate effectively with clients and developed my ability to work independently. In addition, I gained experience in customer service while working for ***.   Applying to the Top Flight Programme is the natural choice for me, because of my deep interest in the European high tech industry. I believe that  maintaining Europe’s competitive position requires continuous innovation and *** is the best example of it. I am also very eager to work in an international environment since I am ambitious to learn more everyday.   I hope my achievements will qualify me to work for you ; and I am thrilled at the idea that I can make a valuable contribution to your company.    Yours sincerely,

Let me explain my choices :
"as well as" = to avoid repeating "and".
"at" the university = is better than "in" I think.
"gained" = is more of an 'active' verb than 'have'.
"applying to the..." = you can drop "applying to" but you need "the" in any case I would think
"eager" = this has to be more than curiosity
whole last sentence = I started by only changing few words but wasn't happy with the result...eventually the sentence is quite different than what you initially had... hopefully it will please you.

Lastly, I need to warn you that I'm not a native...
Saludos,
Waïti.