Improve english for study abroad

Hello everybody,
I want to improve my english to study abroad next year. I've a master's degree in Geosciences and geotechnologies, which I took it at the University of Catania on in July 2014.
In Italy it's very difficult to find work in geology, even (if it would be needful) though it is needed to control the highly environmental and Hyidrogeological risks of effecting my country.
To study abroad, especially in Denmark where I think I'll go, I need to pass the Ielts test with a score above 6.5 (in all the sub-test), so I've to learn more and improve my language skills to pass it without any problems.

- I personally feel this would read better if you didn't abreviate the 'I have' to 'I've', i.e. I have a master degree, and I have to learn more.  But I think that is a personal preference.