It would be usefull for you to have a conversation with other people. Don't worry about it, everyone make mistakes

Practice makes perfect! Be patient and take your time with it.

learn it, appreciate it, love it :D

First you learn the rules of capitalization!

Respected one, you can improve your spelling mistakes by pronouncing it because if you are not pronouncing correctly then obviously you can not write well. Do one thing listen carefully a particular accent like that of Britain or other. But, I suggest you to just stick at one. Don't listen too much videos this will jumble you. This link will be good for you: http://www.youtube.com/watch?v=_OlA9wlxcoA