[Leeroy]

I am about to start to carpet the interior this weekend and have no idea at all how to start. I once carpeted my ski boat but it was just flat sides & bottoms and I even made it look ok! So I was wondering if anyone had some good tips, ideas on how to make it look like I didn't do it. I am using a non backed type which the wholesaler said would be easiest as it will stretch a bit. So please you thoughts would be appreciated.
Leeroy.