There is only one way to go - you have to practice.
We cannot do your reading, writing and listening for you - that is for you to do. What we can do is advise you on your writing and suggest improvements.
For a start, do not use shortened forms - use proper English forms.
You could also go through the various online tests that are available to train yourself in grammar again. Start here: http://www.usingenglish.com/testing.html
Also, please be patient - we are volunteers with other things to do. Someone will always get to you in the end.
- For Teachers