pls help

today i have english essey so i need you to se is it good grammar and big,small letters blabla,its today so fast:
Dear John

Thank you for your letter.I recieved the letter yesterday and I'm very excited to see you in Croatia.So you say you are coming here next week so i called a lot friends and whole family to meet you.Everyone are very exciting!
You don't need to worry about my friends I am sure that they are gonna like you.We can go out and party together if you want it will be awesome expirience for you and us too.
My city,Osijek is not big city like London from where you are it is a lot different here it is not so noisy city.It does not have much traffic but there is lot of things to do,I can show you when you come.When you arrive next day we can go watch soccer game on football field it is great expirience,you must go with me you will love it!After that we can go to Zagreb whitch is a lot noisyer then Osijek to visit my cousins i promised them to come by.Haven't seen them for ages.
My friend was in London and he says it is really beautyfull there and people are very nice and helpfull.Only what he didn't liked was big noise and a lot of traffic.It was his first time travelling with plane and he is scared from highs so he just waited to get on ground.I hope you are not scared of highs so i wish you a luck.
Tell me when exactly you are coming so i can meet you on station.Send me message soon so i don't have to worry,peace.

Kristijan