Motivation Letter

Hello, please antbodt can give me ideas for the motivation letter for Erasmus Mundus Action 2 scholarship ( program ALRAKIS). I study the spanish language but the motivation letter must be in english, so i can not express myself as well as i do in spanish. also i don't have much information how to write a motivation letter to get scholarship at the Erasmus program. I want to study "education" at the University Santiago de Compostela, Spain. Although my qualification is the translation/interpretation but there is no a wide selection of study fields, so i am thinking of selecting "Education". but the most important thing for me is to study abroad, i realized a spanish course in august in spain and saw that it is necessary for me to be in my field...Please help me, waiting for your answers.

Thanks beforehand,

Aydan.