craftgrrl | Crocheted Finished Edges

Laugh if you will, but I cannot do a proper crochet finished edge after I finish a crochet project. For some reason, I get confused as to where I should and should not put a stitch as I go around my project, and it usually ends up with a slightly ruffled look.

My solution to this has always been not to put a crocheted edge around anything, but I'm working on a project that really needs one. I plan on doing a simple sc all around, but I know it's going to get that slightly ruffled look.

Is there a site out there that explains where a crochet stitch should and should not go when making a finishing edge? Or maybe there's a simple explanation that I'm completely missing? I really think I'm just making it harder than it is.

Thank you.