Tell me

I had wached a movie before I went on my bed.
I was thinking on my bed.
' why I can'nt grow up my English...'

I don't know. I want to speak English well!!
I hope so.

Ok! Good lack me!!! hahaha!!

Can you ask a question?

What kind of do you like cool word?
Tell me~!!

Correction:
*don't forget the "t" in "Watched"
"only one "n" in "can't". Also, you would say "get better" instead of "grow up."
*You mean "luck," not "lack." :]
*when about to say a quote, use a comma before it in most cases. for example,
"And then she said to me, 'I would never do that!'"
*use double quotes ( " ", not ' '.)
*don't forget, in English, if you are talking about yourself, you need to say so. In this case, you would use "I" (English can be repeatative, ne?!) and "ask" would come before "you." So, it would be "Can i ask you a question?" 
*this would be, "What kind of cool word do you like?" in this case, the sublect ("cool word") comes before the verb ("like.")

いい！You are doing great! しかり！