PLEASE!! Someone correct my motivational letter for Erasmus.... I'm begging you :( !!!

Please help me with my grammar and i would be grateful if you can pinpoint the problem to my letter!!!

I would like to partecipate to the Erasmus + KA1 program.

As my CV shows, I have obtained the qualification certificate ..............................I did my job training in a travel agency which deals about the customer service, answering phone inquiries, web check-in amd organizzazion of package tour.

I am trustworthy and I accept responsibility. I am a shy person that's why through this program, I want to improve myself, to broaden my horizon, to be more confident and most of all to change myself for the better. I also have this strong desire to learn and gain new knowledge.

It would be an honor for me to be an Erasmus student. This program is a one in a life time opportunity for me because I never had a chance to go to other country like Greece. Just thinking about going to Greece makes me feel excited. The possibility to know their culture, meeting new people with different perspective in life and experiencing and learning new things are such a great opportunity. It can also be useful for my future career and it can help improve my English.

I would be very grateful if you consider my application and give me a chance to partecipate in this program.

Thank you for your consideration.

Best regards,