I've based a character on someone I know will this get me into trouble?

I've based a character on someone I know will this get me into trouble?

Russell Celyn Jones (Published writer. Professor of Creative Writing and Director of the MA Programme at Birkbeck College (University of London).) gives expert video advice on: How do I build a character?; Do some characters write themselves?; How can I make a character believable? and more...

If you base a character on someone you know, it could get you into trouble if the portrait you created is very similar to the real life character. The character may want to sue you. It is unlikely, but it does happen, of course. It is probably good practice to create fictional characters that do not resemble anyone you know in the end.