i am writing on computational mechanics and materials, for my master program.any correction made will be highly appreciated.

it's not rocket science. use this guideline
paragraph one: what event made you choose the course. be sincere and straight to the point.

paragraph two: what efforts did you make to gear your interests in the above course. like during secondary school or university.

paragraph three: y masters? what other skills do you feel u still need in the field. the want students that are self aware, your strengths and weaknesses.

paragraph four: y d specific school, what do u think the school can offer you, how can they make u improve with their module of teaching.

last paragraph: conclusion. how the school will help you and in turn how you will help your country, environment or planet.

cheers

PS: didn't read the document though