I'm making a wrap-style carrier for my sister out of jersey and want to finish the edges nice.  Looked around the web a little and found finishing jersey for dresses (handstitching serged edges to the inside about an inch doesn't really work here  ) but nothing helpful for something like this.  I do not have a serger...but have plenty of stretch stitches on my machine and a twin needle if that helps?  Any advice??     

You know that stitch you can use to finish off things on stretch fabric where, on the front of the fabric it shows 2 lines of straight stitching, and the back it has a zigzag?  I think people here have mentioned this stitch and it being used on a serger, but I was wondering if the same could be achieved somehow on a regular machine with a twin needle or something...   

If it cannot, what do you all do for finishing stretch without a serger (esp necklines...I've had trouble there!)?

Thanks!

I will be making a baby snowsuit/bunting thing for my soon-to-be-here niece.  I have a pattern, but for the mittens I'd like to do the kind that are attached to the sleeve (not by string, but sewn in) and is basically a flap that you can leave up on the outer sleeve or flip onto the hand.  These are nice as baby can't get them off as easily as mittens.  I thought it'd be easy enough, but upon examination of a few in the store...well    There were seams where I hadn't thought there'd be...and I couldn't find seams where I thought there'd be...ack!  Maybe it was b/c these were lined and I'm overthinking, but I'd hoped maybe one of you had done something like this b4 and could help me out?  Any tips or even scribbled pics would be much appreciated!