You can start by never using "dis" and "dat" again.

****ing people castrating "this" and "that".

You also misspelled "English" as well as forgetting to capitalise it, and you forgot the apostrophe in "I'm".

So no shorts for words and stuff.
Wat about 4 as for?

Unacceptable.

okay , i got it.
what do you think about this Sentence?
Pretty A+ Work right?

W-why is "what" not capitalized? And why is "sentence" capitalized? And why isn't there a comma after "work" in your last sentence?

Sorry, but I couldn't resist pointing those out.

Atleast i got the first sentence right, Sweet.

Not so. The correct sentence is as follows:

Okay, I have (I've) got it.

You also capitalized "work," an improper noun in the middle of the sentence.

Oh wow.
well nevermind then.

You need to capitalize "well" and put a comma after it.