Angličtina - esej o oboru který studuji

Dobrý den, jsem student druhého ročníku na spsstav v Plzni. Dostal jsem za úkol napsat esej o oboru který studuji, jenže nejsem moc anglicky nadaný takže ta esej vypadá tak jak vypadá. Budu rád za každé typy, rady a opravení chyb eseje.

Geodesy

I finished my elementary school in 16 years old and after them I go to Technicall collage of civil engineering. My parents decided that I will study geodesy and plan surveying. This branch is focused on measure depths, lengths and angels. This work is very important, because people need maps and planes. On extern ship we use very expensive machinery: GPS, Theodolite , engineer´s level and some equipmentflagpole, levelling rod, hammer, orange spray and reflexive vest. My branch have about 4 special school subjects: Mapmaking, Cadastre, Cartography and Applied math and physics. Most difficult common school subject for me is sure English language and special school subject is Applied math and physic.

Předem děkuji za odpověďi s pozdravem Honza V.