The internetz can be dangerous.

I remember when texting first started getting REALLY big, and a couple years later, when I was in one of my high school classes, the teacher was talking about how much she hated all IM services and texting because she sees its effects in essays she's handed all the time. She'll see people accidentally say "u" instead of "you" or they'll forget to use an apostrophe or something else obvious. Just be careful, because I can see things like the iPhone making it even worse with autocorrect correcting everything from apostrophes to horribly misspelled words, and the typist would never even notice it because when they read back over it, everything looks like proper English. It can definitely lead to some bad habits IMO.

Regardless, that's why you should read your book to make sure nothing is glaringly obvious. I remember this one book, Starcraft: Nova, which was already meant to just be for the fans, but it turned out to be soooo bad. There were misspellings and bad punctuation strewn about, almost as if it was done deliberately out of a personal grudge this personal had for me. The sentence construction was atrocious, the logic was gratuitously flawed, and the manner in which the writer expressed his thoughts, in order to engage the reader, reminded me of when I used to write short stories in 7th and 8th grade.  

Sorry, I got lost in my rant for a moment. I do not let go of prolonged bad experiences such as that easily. I have a feeling you'll do just fine for an amateur (not an insult).  As you get more into the groove of it again, you will most likely start expressing yourself in a fluid and clear manner.  I'd love to read the chapter when you've finished it though :)