你好！我是。。。

你好^^ 我是苑珊。你好吗？
对不起, <-（no need）我的中文是不好不是很好。
我懂一点点中文。谢谢！
再見！

But you can speak Cantonese(part of Chinese). yes?

你好！我是。。。

你好^^ 我是苑珊。你好吗？
我的中文不是很好。
我懂一点点中文。谢谢！

再见！

-

note: Ah, I feel so stupid now "Orz
So sorry, I didn't realize there was an option to edit the notebook entry.

你好！我是。。。

你好^^ 我是苑珊。你好吗？
对不起, 我的中文不是很好。 
我只懂一点点中文。谢谢！ 

再見！

fixed something as below, be ware of the worlds in blue.

>>"对不起" is something like " I am sorry!", you don't need to be. I guess, "不好意思" is much close, like "Excuse me".

And "不", we use this before"是"。Chinese guy would like to add "很/太/怎么" before good, something like-I can speak a little English, but maybe not (so) good enough to communicate with English speakers.

你好！我是。。。

你好^^ 我是苑珊。你好吗？
对不起不好意思, 我的中文是不好不是很/太好（or 不怎么好）。
我懂一点点中文。谢谢！
>>"对不起" is something like " I am sorry!", you don't need to be. I guess, "不好意思" is much close, like "Excuse me".

And "不", we use this before"是"。Chinese guy would like to add "很/太/怎么" before good, something like-I can speak a little English, but maybe not (so) good enough to communicate with English speakers.

>>这本书很好！this book is very good!

这本书太好了！this book is wonderful!

"太"is usually stronger than "很"

>>if you are disppointed with that book, and you would say “这本书不怎么样！"  this book is not good at all.
再见！