There are very few handwriting fonts with both upright and italic versions. If you need italic for emphasis, I suggest using a bolder weight instead. Here are a variety of professional handwriting fonts, many of which have multiple weights.

It may be too late to make a change, but I don't think Karinna is a wise choice for body text. It's far too idiosyncratic and will distract readers. If you can tell me a little more about the book, I could offer some appropriate alternatives.

Thanx stephen for your info. The book will be about a girl that has cerebral palsy but her brain is very sharp etc. and it's not too late because I didn't start the typesetting process yet. Why do u say that korinna won't be such a good choice, if I recall I saw quite a few books with this typeface? what font would u suggest?

Also I saw the link that you provided about the script lettering, so what would you suggest for a font? but remember there MUST be italics too.

Thanx for your help
Sruly