Проверьте письмо по английскому пожалуйста !

Hello, Edward .
I'M very glad to read your letter . Is it your desire to make a hobby project or IT'S a university task? I will try to answer your question and write all I know about hobbies in Russia . Different people have different hobbies . Someone enjoys collecting STAMPS (mark - это марка как монета - финская марка, немецкая марка) or old coins . I think IT'S not so interesting, but if you FIND a very valueble one it is going to be extremely expensive and demanding some years . Others like to create something HANDMADE.. They just take the material and make furniture or decor for SOMEONE'S flat or SUMMERHOUSE . As for me, i can sit for hours at my computer doing 3-d modeling . i open the programm, choose what i want to DO and DO IT STEP BY STEP.
As a result, i get A realistic car or house . This work can be LEARNT BY everyone .Yes, i agree with your opinion . Its true that people have different interests . I even have nothing in comon with my folk as for hobbies. Unfortunately, I CAN'T give you examples of what people like AND DISLIKE to do, because i DON'T know THE culture of other countries .
So, i guess (THINK, BELIEVE лучше, guess не очень подходит по смыслу) i answered your questoins . Now, about your great news, IN THE letter i got THERE was said that you succesfully passed the exam . Was it difficult?
Did you learn hard? And what kind of exam IT WAS?
Please, answer back soon, best wishes, Alex .

Ошибки:
1. Im very glad - нет апострофа I'm
2.or its a university task? - надо or a university task
3. i - I с большой буквы
4. I think its not so interesting - it's апостроф!
5. you found a very valueble - valuAble
6. to create something by their own - ON their own
7. decor for someones flat or dach - decorate for someone flats oe dachas
8. detail for detail do it - порядок слов do it вначале
9. As a result, i get realistic car or house - I (с большой буквы) get A (артикль) realistic car or A house
10. This work can be learned everyone - BY everyone (предлог)
11. of what people like to do and what dislike - and what THEY dislike
12. i dont know - I don't now
13. in letter i got was said that you succesfully passed the exam - in your letter it was said that you passed(уже имеется ввиду, что успешно) the exam
14. And what kind of exam ? -and what kind of exam was it?
Это то, что бросается в глаза.